| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Instructor's manual to accompany Making the most of marriage: Fourth edition, by Paul H. Landis | 978-0-390-53863-5 (0-390-53863-9) | 1970 |
| Study guide for Landis' Making the most of marriage | 978-0-390-53862-8 (0-390-53862-0) | 1970 |