Weisman, Roanne, author
Health Communications, Inc, 2003
Buku Teks
Penalver, Rafael A., author
Arco Publishing, Inc., 1981
Buku Teks
Penalver, Rafael A., author
Arco Publishing, 1984
Buku Teks
Smyth, Angela, author
Thorsons, 1994
Buku Referensi
editors, John M. Last, Robert B. Wallace ; associate editors, Elizabeth Barrett-Connor [and others]
Appleton & Lange, 1992
Buku Referensi