| Verfasser | Häufigkeit |
| Richards, Mark |
14 |
| Freud, Sigmund 1856-1939 |
12 |
| Mitscherlich, Alexander 1908-1982 |
12 |
| Richards, Angela |
12 |
| Ford, Neal |
11 |
| Holm, William A. |
10 |
| Scheer, James A. |
9 |
| Richards, Keith 1943- |
7 |
| Richards, Emil 1932-2019 |
6 |
| Richards, Martin |
6 |
| Dehghani, Zhamak |
5 |
| Greenlaw, Paul S. |
5 |
| Heflin, Van 1910-1971 |
5 |
| Jagger, Mick 1943- |
5 |
| Richards, James M. 1907-1992 |
5 |
| Richards, Mark A. 1952- |
5 |
| Richards, Max D. |
5 |
| Richards, Silvia 1916-1999 |
5 |
| Safari, an O'Reilly Media Company |
5 |
| Stone-Richards, Michael |
5 |