Almond, Gabriel A., author
Little, Brown & Co., 1978
Buku Teks
Christian Soe
McGraw-Hill, 2004
Buku Teks
Barringron, Lowell, author
Wadsworth and Cengage Learning, 2013
Buku Teks
Le Roy, Michael K., author
Thomson Wadsworth, 2007
Buku Teks
Wang, James C.F., author
Prentice-Hall, 1994
Buku Teks