W.B. Saunders , 1989
Buku Teks
Zaumeyer, Carolyn, author
Davis company, 2003
Buku Teks
Doane, Gweneth Hartrick, author
Lippincott Williams & Wilkins, 2005
Buku Teks
Hickey, Joanne V., author
Philadelphia, 1996
Buku Teks
edited by Hamilton I. McCubbin, Anne I. Thompson
University of Wisconsin-Madison, 1987
Buku Teks