edited by Joyce Crane
Grune & Station , 1983
Buku Teks
Chenitz, W. Carole
Saunders , 1991
Buku Teks
Macnee, Carol L.
Lippincott Williams & Wilkins, 2004
Buku Teks
edited by Jeyanth Asheervath and Dorothy R. Blevins
Appleton-Century-Crofts, 1986.
Buku Referensi
Cohen, Felissa L.
J.b. Lippincott , 1984
Buku Teks