Dandy Prakoso, author
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UI - Skripsi (Membership)
Natasia Josephin, author
Fakultas Psikologi Universitas Indonesia, 2016
UI - Skripsi (Membership)
Rhena Anggraeni, author
Fakultas Psikologi Universitas Indonesia, 2016
UI - Skripsi (Membership)
Rosefsky, Robert S., author
John Wiley & Sons, 1978
Buku Teks
Stillman, Richard J., author
Prentice-Hall, 1972
Buku Teks