Hunt, Roberta, author
Lippincott, 2001
Buku Teks
McKenzie, James F., author
Jones and Bartlett, 2005
Buku Teks
McEwen, Melanie, author
W.B. Saunders , 1998
Buku Teks
Brownlee, Ian, author
Longman, 1998
Buku Teks
Rhonda Phillips, Robert H. Pittman, editor
Routledge, 2009
Buku Teks