Cook, Chris
Macmillan, 1975
Buku Referensi
Price, Charles Archibald
Australian Institute of International Affairs in association with Australian National University Press, 1974
Buku Teks
editor, Sri Edi Swasono, Masri Singarimbun
UI-Press , 1986
Buku Teks
Jones, Rodwell Ll.
Methuen, 1950
Buku Teks
Hussey, Russell C.
McGraw-Hill, 1947
Buku Teks