Cohen, John
Psychological probability or the art of doubt / John Cohen
George Allen and Unwin Ltd., 1972
 Buku Teks
Cohen, John
Humanistic psychology / John Cohen
George Allen and Unwin, 1958
 Buku Teks
Psychological assessment
American Psychological Association, 1997
 Majalah, Jurnal, Buletin
Psychological Review
American Psychological Association, Inc.,, 2002
 Majalah, Jurnal, Buletin
Psychological Review
 Majalah, Jurnal, Buletin
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