Freeman, Ruth B., author
W.B. Saunders, 1981
Buku Teks
Clark, Mary Jo, author
Prentice-Hall, 2003
Buku Teks
Clark, Mary Jo, author
Appleton & Lange, 1999
Buku Teks
edited by Dianne Watkins
Bailliere Tindall, 2003
Buku Teks
McMurray, Anne, author
Churchill Livingstone , 1990
Buku Teks