Calvani, Terry, author
Little, Brown, 1988
Buku Teks
Westview, 1991
Buku Teks
Sherman, Roger
Addison-Wesley, 1978
Buku Teks
Kunstler, James Howard, author
Simon and Schuster, 1993
Buku Teks
edited by Diana J. Mason, Judith K Leavitt, Mary W. Chaffeee
Elsevier Saunder, 2012
Buku Teks