Diehm, William J., author
BPK Gunung Mulia, 1990
Buku Teks
Diehm, William J., author
BPK Gunung Mulia, 1990
Buku Teks
Korrie Layun Rampan, author
Yayasan Arus, 1984
Buku Teks
Matondang, June C, author
Fakultas Psikologi Universitas Indonesia, 1991
UI - Skripsi (Membership)
Mattulada, H. Andi, author
Dirjen Dikti. Depdikbud RI, 1979
Buku Teks