Rodman, Morton J., author
J.B. Lippincott, 1984
Buku Teks
edited by Jeyanth Asheervath and Dorothy R. Blevins
Appleton-Century-Crofts, 1986.
Buku Referensi
Mike Walsh, editor
Bailliere Tindall , 2002
Buku Teks
by Roberta Todd Spencer... [et.al]
J.B. Lippincott , 1993
Buku Teks
Elkin, Martha Keene, author
Mosby, 2000
Buku Teks