| Verfasser | Häufigkeit |
| Bailey, Colin B. 1955- |
1 |
| Bergdoll, Barry 1955- |
1 |
| Bevier, Christiana Maurine 1978- |
1 |
| Dolkart, Andrew S. 1951- |
1 |
| Foner, Daria Rose 19XX- |
1 |
| Nelson, Christine 1963- |
1 |
| Regan, Barry John 1988- |
1 |
| Regan, Brian 1938- |
1 |
| Stevenson, Carolyn N. 1968- |
1 |