by Roger A. Kerin ... [and others]
McGraw-Hill, 2002
Buku Teks SO
Etzel, Michael J.
McGraw-Hill, 2004
Buku Teks SO
Kerin, Roger A.
The McGraw-Hill, 2003
Multimedia
Kurtz, David L.
The Dryden Press , 1981
Buku Teks SO
Phillips, Charles F.
Boston , Houghton Mifflin
Buku Teks SO