Russell, Roberta S.
Prentice-Hall, 2000
Multimedia
Russell, Roberta S.
Prentice-Hall, 2000
Multimedia
Gates, Jean Key
McGraw-Hill, 1994
Buku Referensi
Kotler, Philip
Prentice Hall of India, 1988
Buku Teks
Kotler, Philip
Prentice Hall International, 1984
Buku Teks