O`Brien, James A., 1936-, author
McGraw-Hill, 2011
Buku Teks
Russell, Roberta S.
Prentice-Hall, 2000
Multimedia
Russell, Roberta S.
Prentice-Hall, 2000
Multimedia
Gates, Jean Key, author
McGraw-Hill, 1994
Buku Referensi
Kotler, Philip, author
Prentice Hall of India, 1988
Buku Teks