Luft, Joseph
Mayfield Publishing Company, 1984
Buku Teks
edited by Jonathon Gillette and Marion McCollom
Addison-Wesley, 1990
Buku Teks
Shaw, Marvin E.
New York, 1981
Buku Teks
Hartley, Peter, 1946-
Routledge, 1997
Buku Teks
Forsyth, Donelson R.
Wadsworth and Cengage Learning, 2014
Buku Teks