Schatt, Stanley
Prentice-Hall, 1994
Buku Teks
Condon, Robert J., author
Reston Publishing, 1978
Buku Teks
Forkner, Irvine, author
John Wiley & Sons, 1973
Buku Teks
Kroenke, David M., 1946-, author
Mitchell Publishing, 1987
Buku Teks
Fuori, William M., author
Prentice-Hall, 1981
Buku Teks