2
Germino, Dante L.
| Harper & Row |
1967
3
Huntington, Samuel P.
| Yale University Press |
1968
6
Falco, Maria J.
| Merrill |
1973
7
Riker, William H.
| Prentice-Hall |
1973
8
Falco, Maria J.
| Merrill |
1973
9
Steinbruner, John D.,
| Princeton University Press |
1974
10
Cuthbertson, Gilbert Morris.
| Michigan State University Press |
1975