Laski, Harold J., author
George Allen and Unwin, 1952
Buku Teks
Faisal Djamal, author
UNDP, 2009
Buku Referensi
Dodd, Lawrence C., 1946-, author
Princenton University Press, 1976
Buku Teks
Bailey, Sydney D., author
Institute of pacific relations, 1953
Buku Teks
Fred Dallmayr, Jose M. Rosales, editor
Lexinton Books, 2001
Buku Teks