| title | ISBN-13 | year of publication |
|---|---|---|
| Ethics: An Examination of Contemporary Moral Problems | 978-0-03-058318-6 | 1982 |
| Good Thinking: An Introduction to Logic, 2nd edition | 978-0-03-058161-8 | 1981 |
| Good Thinking: An Introduction to Logic | 978-0-03-030707-2 | 1991 |
| Good thinking: An introduction to logic | 978-0-03-023066-0 | 1978 |