Bloland, Harland G.
American learned societies in transition : the impact of dissent and recession
McGraw-Hill, 1974
 Buku Teks SO
A handbook of psychological assessment in business
edited by Curtiss P. Hansen and Kelley A. Conrad
Quorum Books , 1991
 Buku Referensi
Publication manual of the American psychological association
American Psychological Association, 1987
 Koleksi Publik
Publication manual of the American Psychological Association
American Psychological Association, 2007
 Buku Referensi
Publication manual of the American psychological association
American Psychological Association, 1994
 Buku Teks SO