Gardner, D.H.
New York: Institute of Pasific Relations, 1950
Buku Teks
Griswold, Alfred Whitney, 1906-1963, author
Brace, 1939
Buku Teks
Chubin, Shahram
New York Oxford University Press 1996,
Buku Teks
Robiatul A., author
Universitas Indonesia, 2010
UI - Skripsi (Open)
Boeke, Hendrik Enno., author
Leiden Universitaire Pers 1948
Buku Teks