Dewey, John, author
Mentor Book, 1955
Buku Teks
Chisum, W. Jerry, author
Academic Press/Elsevier, 2011
Buku Teks
Lieu, D.K.
Rutgers University Press, 1948
Buku Teks
A.K.P. Mochtan, editor
Centre for Strategic and International Studies, 1992
Buku Teks
Hutchinson, Ray Coryton
New York Rinehart 1949
Buku Teks