Monsen, R. Joseph, author
Houghton Mifflin, 1967
Buku Teks
Kelly, Marce, author
Cengage Learning, 2016
Buku Teks
Redmond, Peter W. D., author
The M & E Handbook Series, 1993
Buku Teks
Kroenke, David M., 1946-, author
Mitchell Publishing, 1987
Buku Teks
Anshen, Melvin
Macmillan, 1949
Buku Teks