Simanjuntak, Bungaran Antonius, author
Yayasan Obor Indonesia, 2010
Buku Teks
Vergouwen, J. C., author
Martinus Nijhoff, 1964
Buku Teks
Fakultas Psikologi Universitas Indonesia, 2012
UI - Skripsi (Open)
Sarumpaet, J.P. (Jan Pieter), author
Erlangga, 1994
Buku Referensi
Sarumpaet, J.P. (Jan Pieter), author
Erlangga, 1995
Buku Referensi