Monk, Andrew, author
John Wiley & Sons, 1991
Buku Teks
Howell, David C.
Thomson/Wadsworth, 2008
Buku Teks
Fallik, Fred
The Dorsey Press, 1983
Buku Teks
Games, Paul A., author
McGraw-Hill, 1967
Buku Teks
Gelbaum, Bernard R., author
W.B. Saunders, 1969
Buku Teks