| title | media type | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|---|
| The Social Evil in University Life: A Talk With the Students of the University of Pennsylvania | Paperback | 978-0-243-10660-8 (0-243-10660-2) | 2019 |
| The Social Evil in University Life: A Talk With the Students of the University of Pennsylvania | Hardcover | 978-0-483-23670-7 (0-483-23670-5) | 2019 |
R.N. · Robert N. · Robert Newton Willson · Robert W. · Robert Willson