Zaumeyer, Carolyn
Davis company, 2003
Buku Teks
edited by Patti Rager Zuzelo
Jones and Bartlett Publishers, 2010
Buku Teks
Chase, Susan K.
F.A. Davis , 2004
Buku Teks
Fenstermacher, Karen
Saunders, 1997
Buku Teks SO
edited by Mike Walsh, Alison Crumbie, Shirley Reveley
Butterworth-Heinemann, 1999
Buku Teks