Buy vs Rent: We recommend you Buy
This compares the total cost of owning the book (cheapest buy price minus the best sell-back offer today) with the cheapest rental.
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Disclaimer: These calculations are based on the current advertised price. Your results will vary depending on several factors, including the condition of the book and the advertised price at the time of sale.
| Store | Condition | Coupons & Deals | Price | Shipping | Total | |
|---|---|---|---|---|---|---|
| eCampus (Marketplace) Used (Marketplace) |
Used (Marketplace) |
$17.25 as of Oct 20, 2026, 9:30 AM ET |
$3.97 | |||
| Knetbooks Short Term Rental (60 days, due 12/19/2026) |
Short Term Rental (60 days, due 12/19/2026) |
$51.46 as of Oct 20, 2026, 9:30 AM ET |
at checkout | |||
| BiggerBooks Short Term Rental (60 days, due 12/19/2026) |
Short Term Rental (60 days, due 12/19/2026) |
$53.54 as of Oct 20, 2026, 9:30 AM ET |
at checkout | |||
| Knetbooks Quarter Rental (59 days, due 12/18/2026) |
Quarter Rental (59 days, due 12/18/2026) |
$54.31 as of Oct 20, 2026, 9:30 AM ET |
at checkout | |||
| Knetbooks Used |
Used | $55.44 as of Oct 20, 2026, 9:30 AM ET |
at checkout | |||
| eCampus Short Term Rental (60 days, due 12/19/2026) |
Short Term Rental (60 days, due 12/19/2026) |
$51.98 as of Oct 20, 2026, 9:30 AM ET |
$3.97 | |||
| BiggerBooks Quarter Rental (59 days, due 12/18/2026) |
Quarter Rental (59 days, due 12/18/2026) |
$56.51 as of Oct 20, 2026, 9:30 AM ET |
at checkout | |||
| Knetbooks Semester Rental (76 days, due 01/04/2027) |
Semester Rental (76 days, due 01/04/2027) |
$57.17 as of Oct 20, 2026, 9:30 AM ET |
at checkout | |||
| eCampus Quarter Rental (59 days, due 12/18/2026) |
Quarter Rental (59 days, due 12/18/2026) |
$54.86 as of Oct 20, 2026, 9:30 AM ET |
$3.97 | |||
| BiggerBooks Semester Rental (76 days, due 01/04/2027) |
Semester Rental (76 days, due 01/04/2027) |
$59.48 as of Oct 20, 2026, 9:30 AM ET |
at checkout | |||
| RedShelf eTextbook (RedShelf) |
eTextbook (RedShelf) |
$61.60 as of Oct 20, 2026, 9:30 AM ET |
FREE | |||
| eCampus Semester Rental (76 days, due 01/04/2027) |
Semester Rental (76 days, due 01/04/2027) |
$57.75 as of Oct 20, 2026, 9:30 AM ET |
$3.97 | |||
| Store | Condition | Coupons & Deals | Price | Shipping | Total | |
|---|---|---|---|---|---|---|
| eCampus (Marketplace) Used (Marketplace) |
Used (Marketplace) |
$17.25 as of Oct 20, 2026, 9:30 AM ET |
$3.97 | |||
| Knetbooks Used |
Used | $55.44 as of Oct 20, 2026, 9:30 AM ET |
at checkout | |||
| Store | Condition | Coupons & Deals | Price | Shipping | Total | |
|---|---|---|---|---|---|---|
| BiggerBooks New |
New | $76.15 as of Oct 20, 2026, 9:30 AM ET |
at checkout | |||
| Knetbooks New |
New | $76.54 as of Oct 20, 2026, 9:30 AM ET |
at checkout | |||
| eCampus New |
New | $76.92 as of Oct 20, 2026, 9:30 AM ET |
FREE | |||
| Store | Condition | Coupons & Deals | Price | Shipping | Total | |
|---|---|---|---|---|---|---|
| Knetbooks Semester Rental (76 days, due 01/04/2027) |
Semester Rental (76 days, due 01/04/2027) |
$57.17 as of Oct 20, 2026, 9:30 AM ET |
at checkout | |||
| BiggerBooks Semester Rental (76 days, due 01/04/2027) |
Semester Rental (76 days, due 01/04/2027) |
$59.48 as of Oct 20, 2026, 9:30 AM ET |
at checkout | |||
| eCampus Semester Rental (76 days, due 01/04/2027) |
Semester Rental (76 days, due 01/04/2027) |
$57.75 as of Oct 20, 2026, 9:30 AM ET |
$3.97 | |||
| Store | Condition | Coupons & Deals | Price | Shipping | Total | |
|---|---|---|---|---|---|---|
| Knetbooks Quarter Rental (59 days, due 12/18/2026) |
Quarter Rental (59 days, due 12/18/2026) |
$54.31 as of Oct 20, 2026, 9:30 AM ET |
at checkout | |||
| BiggerBooks Quarter Rental (59 days, due 12/18/2026) |
Quarter Rental (59 days, due 12/18/2026) |
$56.51 as of Oct 20, 2026, 9:30 AM ET |
at checkout | |||
| eCampus Quarter Rental (59 days, due 12/18/2026) |
Quarter Rental (59 days, due 12/18/2026) |
$54.86 as of Oct 20, 2026, 9:30 AM ET |
$3.97 | |||
| Store | Condition | Coupons & Deals | Price | Shipping | Total | |
|---|---|---|---|---|---|---|
| Knetbooks Short Term Rental (60 days, due 12/19/2026) |
Short Term Rental (60 days, due 12/19/2026) |
$51.46 as of Oct 20, 2026, 9:30 AM ET |
at checkout | |||
| BiggerBooks Short Term Rental (60 days, due 12/19/2026) |
Short Term Rental (60 days, due 12/19/2026) |
$53.54 as of Oct 20, 2026, 9:30 AM ET |
at checkout | |||
| eCampus Short Term Rental (60 days, due 12/19/2026) |
Short Term Rental (60 days, due 12/19/2026) |
$51.98 as of Oct 20, 2026, 9:30 AM ET |
$3.97 | |||
| Store | Condition | Coupons & Deals | Price | Shipping | Total | |
|---|---|---|---|---|---|---|
| RedShelf eTextbook (RedShelf) |
eTextbook (RedShelf) |
$61.60 as of Oct 20, 2026, 9:30 AM ET |
FREE | |||
| eCampus 180 Day eBook (expires 04/18/2027) |
180 Day eBook (expires 04/18/2027) |
$73.92 as of Oct 20, 2026, 9:30 AM ET |
FREE | |||
| BiggerBooks 180 Day eBook (expires 04/18/2027) |
180 Day eBook (expires 04/18/2027) |
$73.92 as of Oct 20, 2026, 9:30 AM ET |
FREE | |||
| Store | Condition | Coupons & Deals | Price | Shipping | Total | |
|---|---|---|---|---|---|---|
| VitalSource eBook |
eBook | Check price at VitalSource |
at checkout | |||
| Amazon New & used |
New & used | Check price at Amazon |
at checkout | |||
| AbeBooks Used & new (marketplace) |
Used & new (marketplace) | Check price at AbeBooks |
at checkout | |||
| SellBackBooks Sell back |
Sell back | Check price at SellBackBooks |
at checkout | |||
Prices checked Oct 20, 2026, 9:30 AM ET. Totals include shipping where the store lists it. As an Amazon Associate, CheapestTextbooks.com earns from qualifying purchases.
Recent years have seen the development of powerful tools for verifying hardware and software systems, as companies worldwide realise the need for improved means of validating their products. There is increasing demand for training in basic methods in formal reasoning so that students can gain proficiency in logic-based verification methods. The second edition of this successful textbook addresses both those requirements, by continuing to provide a clear introduction to formal reasoning which is both relevant to the needs of modern computer science and rigorous enough for practical application. Improvements to the first edition have been made throughout, with extra and expanded sections on SAT solvers, existential/universal second-order logic, micro-models, programming by contract and total correctness. The coverage of model-checking has been substantially updated. Further exercises have…
When you open this page we ask eCampus, Amazon, Knetbooks, BiggerBooks, VitalSource and RedShelf for their current prices on ISBN 9780521543101 and sort every offer by its total with shipping. Rental rows show the term (semester, quarter or short term) and that term goes with you to the store's cart, and eBook rows link straight to the 180-day or no-expiry option you picked. Prices are rechecked at least every 30 minutes, so confirm the total at checkout.
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