Hanley, D.L, David L.-1944-
Routledge, 1989
Buku Teks
Routledge , 1990
Buku Teks
Sanday, A.P., author
Hodder and Stoughton, 1979
Buku Teks
Bernadeta Sari Utami, author
Universitas Indonesia, 1997
UI - Skripsi (Membership)
Carre, Jean Jacques, author
Stanford University Press, 1975
Buku Teks