Molitoris, Joseph J
Research and Education Association, 1996
Buku Teks
by Samuel C. Brownstein [and others]
Barron's, 1994
Buku Teks
Brown, Larry Dale, author
Research and Education Association, 1994
Buku Teks
St Louis : Elsevier Saunders , 2006
Buku Teks
Simon & Schuster, 1999
Buku Teks