Carlson, Karen J., author
Harvard University Press, 1996
Multimedia
Aron, Elisabeth A., author
Lippincott Williams & Wilkins, 2002
Buku Teks
Williams, Norma
Tiger Books International, 1990
Buku Referensi
edited by Brenna H. Mayer
lippincott Willims & Wilkins, 2005
Buku Teks
Youngkin, Ellis Quinn, author
Appleton & Lange , 1998
Buku Teks