Kerin, Roger A., author
The McGraw-Hill, 2003
Multimedia
Phillips, Charles F., author
Boston , Houghton Mifflin
Buku Teks
Sarah Ashwin, editor
Routledge, 2000
Buku Teks
Denisov, A., author
Foriegn Language, 1960
Buku Teks
Indonesia Tunggal, 1961
Buku Teks