Feist, Jess, author
McGraw-Hill, 2002
Buku Teks
Hal, Calvin Springer, 1909-1985, author
Wiley, 1978
Buku Teks
Hjelle, Larry A., author
McGraw-Hill, 1992
Buku Teks
Burger, Jerry M., author
Wadsworth and Cengage Learning, 2011
Buku Teks
Pervin, Lawrence A., author
New York, 1997
Buku Teks