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Buku Teks
Tan, Oon-Seng, author
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Buku Teks
Robertson, S. Ian, author
Psychology Press, 2001
Buku Teks
Nadler, Gerald
California Prima Publishing 1998.,
Buku Teks
Widyatmiko Adhi Pradhana, author
Fakultas Psikologi Universitas Indonesia, 2014
UI - Tesis (Membership)