Lewis, Bermnard
University of Chicago Press, 1988
Buku Teks
edited by Frank G. Novak
Routledge, 1995
Buku Teks
McGraw-HIll, 2002
Buku Teks
Jensen, William B., author
John Wiley & Sons, 1980
Buku Teks
Palmer, Claude Irwin, author
McGraw-Hill, 1994
Buku Teks