Siagian, Tagor, author
1990
UI - Skripsi (Membership)
Osgood, Robert Endicott, author
University of Chicago Press, 1962
Buku Teks
Salvadori, Massimo
Van Nostrand, 1957
Buku Teks
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 1997
UI - Skripsi (Membership)
Sri Handayani, author
1990
UI - Skripsi (Membership)