Price, Peter W., author
John Wiley & Sons, 1984
Buku Teks
Matthews, E.G., author
University of Queensland Press, 1984
Buku Teks
edited by Frederick W. Stehr
Kendall/Hunt, 1991
Buku Teks
Rofik Sofyan, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2010
UI - Tesis (Open)
The Mcmillan , 1971
Buku Teks