Allender, Judith Ann, author
J.B. Lippincott, 2001
Buku Teks
Spradley, Barbara Walton, author
Little, Brown, 1981
Buku Teks
edited by Stephen Paul Holzemer, Marilyn Klainberg
Jones & Bartlett Learning, 2014
Buku Teks
edited by Allan McNaught
Chapman and Hall , 1991
Buku Teks
edited by Barbara Walton Spradley
Little, Brown, 1986
Buku Teks