O`Brien, James A., 1936-, author
Irwin, 1997
Buku Teks
Olson, David Louis, author
McGraw-Hill , 2004
Multimedia
O`Brien, James A., 1936-, author
McGraw-Hill, 2003
Buku Teks
McGraw-Hill, 2003
Buku Teks
McLeod, Raymond, author
John Wiley & Sons, 1982
Buku Teks