Ingram, Robert W.
Thomson/South-Western, 2004
Multimedia
Ingram, Robert W.
South-Western Publishing, 2004
Buku Teks
Porter, Gary A., 1950-
South-Western, 2001
Buku Teks
Killough, Larry N.
Dickenson Publishing, 1977
Buku Teks
Zimmerman, Jerold L., 1947-
McGraw-Hill, 1997
Buku Teks