Browdy, Jerad D.
An Aspen Publ., 1983
Buku Teks
Safian, Shelly C., author
Delmar, Cengage Learning, 2009
Buku Teks
Harrison, Carlene, author
Delmar Cengage Learning, 2013
Buku Teks
edited, Sharon A. Shueman, Warwick G. Troy and Samuel L. Mayhugh
Charles C. Thomas, 1994
Buku Teks
edited by Stephen J. Williams
John Wiley & Sons, 1980
Buku Teks