Oldenhuis, F.T.
W.E.J,Tjeenk Willink, 1995
Buku Teks
Hirsanuddin, author
Universitas Indonesia, 1996
UI - Tesis (Membership)
Chidir Ali, author
Binacipta, 1982
Buku Teks
Merry, Malcolm
Butterworth, 1985
Buku Teks
Lesar, Hiram H., author
Little, Brown and Company, 1957
Buku Teks