Scaffa, Marjorie E., author
F.A. Davis, 2010
Buku Teks
Holland, Audrey L., author
Plural Publishing, 2007
Buku Teks
McMurray, Anne, author
Harcourt Mosby, 1999
Buku Teks
edited by Michael A. Richard, William G. Emener, William S. Hutchinson, Jr.
Charles C Thomas, 2009
Buku Teks
Stolte, Karen M., author
EGC, 2003
Buku Teks