Westview Press, 1985
Buku Teks
Carre, Jean Jacques, author
Stanford University Press, 1975
Buku Teks
Hackett, John T.
Harvard University Press , 1963
Buku Teks
Bernadeta Sari Utami, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 1997
UI - Skripsi Membership
Ormsby, H., author
Methuen, 1956
Buku Teks