Bemister, Margaret
Douglas, 1973
Buku Teks
Lisa Tanugraha, author
Universitas Indonesia, 1997
UI - Tesis (Membership)
Gibbings, W.W., author
Gramedia Pustaka Utama, 2013
Buku Teks
Driver, Harold E., author
University of Chicago Press, 1961
Buku Teks
Josephy, Alvin M.
Alfred A. Knopf, 1970
Buku Teks