Rosenthal, Martha S., author
Wadsworth and Cengage Learning, 2013
Buku Teks
edited by William J. Taverner, Ryan W. McKee
McGraw-Hill, 2012
Buku Teks
Kelly, Gary F.
Dushkin Pub, 1992
Buku Referensi
Kelly, Gary F.
The Dushkin Publishing Group, 1992
Buku Teks
Hill, Craig A., author
Sage Publications, 2008
Buku Teks