62
McKenna, George.
| The Dushkin Publishing Group |
1990
65
Hoffmann, Erik P.
| Pergamon Press |
1982
67
American Psychological Association.
| American Psychological Association |
1974
68
De Neumann, Bernard.
| Clarendon Press:Oxford University Press |
1991
70
McArthur, William G.
| Prentice Hall |
1992