Martin, James, author
Prentice-Hall, 1989
Buku Teks
Vazsonyi, Andrew, author
Richard D. Irwin, 1980
Buku Teks
Potter, George B., author
Business, 1984
Buku Teks
Hall, James A., author
Thomson/South-Western, 2011
Buku Teks
Shelly, Gary B., author
Anaheim Publishing, 1984
Buku Teks