Gordon, Nathan J., author
Elsevier , 2011
Buku Teks
Walters, Stan B., author
CRC Press, 2003
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Petherick, Wayne, author
Elsevier, 2014
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Adinda Maharani Mudatsir, author
Fakultas Psikologi Universitas Indonesia, 2023
UI - Skripsi (Membership)
Soejono, author
Rineka Cipta, 1996
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