| Verfasser | Häufigkeit |
| Landgraf, Kim |
3 |
| Twain, Mark 1835-1910 |
3 |
| Brigham, Linda |
1 |
| Clarke, Bruce |
1 |
| Conrad, Heinrich 1866-1919 |
1 |
| Hansen, Mark B. N. |
1 |
| Jacobi, Margarete -1910 |
1 |
| Landgraf, Edgar |
1 |
| Livingston, Ira |
1 |
| Luhmann, Niklas |
1 |
| Ottmann, L. |
1 |
| Protevi, John |
1 |
| Schiltz, Michael |
1 |
| Smith, Barbara Herrnstein |
1 |
| Thompson, Evan |
1 |
| Varela, Francisco J. |
1 |
| Weintraub, E. Roy |
1 |
| Wolfe, Cary |
1 |