Davido, Roseline D., author
Salemba Humanika, 2016
Buku Teks
Farieda Isa Edris, author
Universitas Indonesia, 1975
UI - Skripsi (Membership)
Silver, Rawley, author
New York, 2002
Buku Teks
M. Grace Irawaty W., author
Fakultas Psikologi Universitas Indonesia, 1979
UI - Skripsi (Membership)
Lukman S. Sriamin, author
Fakultas Psikologi Universitas Indonesia, 1977
UI - Skripsi (Membership)