| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Critical Thinking, fifth edition: An Introduction to the Basic Skills | 978-1-55111-884-0 (1-55111-884-X) | 2008 | Willam Hughes |
| Critical Thinking, sixth edition: An Introduction to the Basic Skills | 978-1-55111-163-6 (1-55111-163-2) | 2009 | William Hughes ยท Katheryn Doran |