McClintic, J. Robert, author
John Wiley & Sons, 1980
Buku Teks
Vander, Arthur, author
McGraw-HIll, 2001
Buku Teks
Sherwood, Lauralee, author
West Pub. , 1989
Buku Teks
Sherwood, Lauralee, author
Thomson Delmar Learning, 2004
Buku Teks
Sherwood, Lauralee, author
Brooks/Cole, 2010
Buku Teks