Larson, Joan Mathews
Ballantine Pub. Group, 1999
Buku Teks
Engel, Baverly, author
John Wiley & Sons, 2004
Buku Teks
Murray, Joan
Hurtig, 1984
Buku Teks
Reichenberg-Ullman, Judyth
Prima Health, 1999
Buku Teks
Rosenthal, Norman E., author
Citadel Press, 2002
Buku Teks