Masters, Timothy, author
John Wiley & Sons, 1995
Buku Teks
Sandler, Stanley R., author
Academic Press, 1998
Buku Teks
Loudon, Kyle, author
O`Reilly, 1999
Buku Teks
Fausett, Laurene, author
Prentice-Hall, 1994
Buku Teks
Smith, James T., author
McGraw-Hill, 1989
Buku Teks