Ingram, Robert W., author
South-Western, 2005
Multimedia
mcGraw-Hill , 2000
Multimedia
Robert W. Ingram ... [and others]
Thomson, 2005
Buku Teks
Gelinas, Ulric J., author
South-Western , 2005
Buku Teks
Summers, Edward Lee, author
Houghton Mifflin, 1989
Buku Teks