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eBooks
edited by Francis L.K. Hsu
Schenkman, 1972
Buku Teks
edited by Robert Hunt
Natural History Press, 1967
Buku Teks
Lindholm, Charles
McGraw-Hill, 2001
Buku Teks
Misero, Susan Helen
Fakultas Psikologi Universitas Indonesia, 1987
UI - Skripsi Membership