editor, Rom Harre, Roger Lamb
Blackwell Reference, 1983
Buku Referensi
Chaplin, J.P., author
Rajawali, 2011
Buku Referensi
Raymond J. Corsini, editor
Wiley, 1987
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Watson, Donald, author
Andre Deutsch, 1995
Buku Referensi
Solso, Robert L., 1933-, author
Allyn and Bacon, 1998
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