Smale, P.H.
Jakarta: Erlangga, 1986
Buku Teks
Melani Satyoadi
Andi, 2003
Buku Teks
A.R. Margunadi
Dian Rakyat, 1983
Buku Teks
edited by Joseph K. Skwirzynski
Sijthoff and Noordhoff, 1981
Buku Teks
Simon, Marvin K.,
Prentice Hall International, 1995
Buku Teks