McMurry, John, author
Prentice-Hall, 2010
Buku Teks
Seager, Spencer L., author
Brooks/Cole, 2008
Buku Teks
Ouellette, Robert J., author
Prentice-Hall, 1997
Buku Teks
Stoker, H. Stephen, author
Allyn and Bacon, 1991
Buku Teks
Solomon, Sally
McGraw-Hill, 1987
Buku Teks