Mervin, David
Longman, 1990
Buku Teks
Pious, Richard M
Basic Books, 1944
Buku Teks
Corwin, Edward S.
New York University Press, 1956
Buku Teks
Schubert, Glendon A., Jr
University of Minnesota Press, 1956
Buku Teks
Makarim Wibisono [and others]
The Permanent Mission of the Repubilc of Indonesia to the Uniterd Nations, 2001
Buku Teks