Cohen, Barbara Janson, author
Wolters Kluwer, 2008
Buku Teks
Wegmann, T., author
Editiones Roche, 1987
Buku Teks
Hughes, Rebecca, contributing writher; Chasnoff, Ira J., consultan; Ellis, Jeffrey W., consultan; Fainman, Zachary S., consultan; McDermott, Teri J., consultan
Publications International , 1991
Buku Referensi
by James J. Nora [and others]
[publisher not identified], [date of publication not identified]
Buku Teks
James J. Nora [and others]
Lea & Febiger , 1993
Buku Teks