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Buku Teks
Gray, John, author
Gramedia Pustaka Utama, 1998
Buku Teks
Gray, John, author
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Buku Teks
Gray, John, author
Gramedia Pustaka Utama, 2016
Buku Teks
Ratu Fitri Zainab, author
Fakultas Psikologi Universitas Indonesia, 2002
UI - Skripsi Membership