Progress, 2004
Buku Teks
Robinson, William A., author
Elex Media Komputindo , 1991
Buku Teks
Treacy, Michael, author
Gramedia Pustaka Utama, 1996
Buku Teks
Hermawan Kartajaya, 1947-, author
Pustaka Sinar Harapan, 1996
Buku Teks
Forsyth, Patrick, author
Gramedia Pustaka Utama, 1997
Buku Teks