Piersol, Allan G., author
McGraw-Hill, 2010
Buku Teks
Capehart, Barney L.
The Fairmont Press, Inc., 2008
Buku Teks
Jennings, Lucy Mae
Prentice-Hall, 1983
Buku Teks
Seglin, Jeffrey L., 1956-, author
Amacom, 2012
Buku Teks
Bui, Yvonne N., author
Sage , 2014
Buku Teks