Artikel Jurnal
Price, Charles Archibald, author
Australian Institute of International Affairs in association with Australian National University Press, 1974
Buku Teks
Cook, Chris, author
Macmillan, 1975
Buku Referensi
editor, Sri Edi Swasono, Masri Singarimbun
UI-Press , 1986
Buku Teks
Jones, Rodwell Ll., author
Methuen, 1950
Buku Teks