Turner, Paul, author
Macmillan, 1993
Buku Referensi
Karch, Amy M., author
J.B. Lippincott , 1989
Buku Teks
Karb, Virginia Burke, author
Mosby , 1996
Buku Teks
Ehrenpreis, Seymour, author
McGraw-Hill, 2001
Buku Referensi
Swartz, Harry, author
Medical Economics Company Inc., 1981
Buku Referensi