Quinney, Richard, editor
Little, Brown , 1969
Buku Teks
McNamara, Robert Hartmann, author
McGraw-Hill, 2009
Buku Teks
Samaha, Joel, author
West Publishing, 1988
Buku Teks
edited by Larry J. Siegel
West Publishing, 1990
Buku Teks
Regoli, Robert M., author
Jones and Bartlett Publishers, 2010
Buku Teks