Lancaster, Jeanette
Mosby, 1999
Buku Teks
Boss, R. Wayne
Addison-Wesley, 1989
Buku Teks
Ellis, Janice Rider
J.B. Lippincot, 2000
Buku Teks
Ellis, Janice Rider
J.B. Lippincott, 1995
Buku Teks
edited by Jeanette Lancaster and Wade Lancaster
Mosby , 1982
Buku Teks