Smith, Mable H., author
Lippincott Wiliams & Wilkins, 2005
Buku Teks
Winter, Richard
London: The Falmer Press, 1996
Buku Teks
Bennett, F. Lawrence
McGraw-Hill, 1996
Buku Teks
Morrison, Carson, author
McGraw-Hill , 982
Buku Teks
Tucker, Edwin W.
Irwin, 1992
Buku Teks