Backer, C. A.
Wolter Noordhoff, 1968
Buku Referensi
Hutton, Peter, author
Apa Productions (HK, 1974
Buku Referensi
Schoppert, Peter, author
Periplus Editions, 1997
Buku Referensi
IDG Books, 1997
Multimedia
Farrell, Joyce, author
Course technology Cengage Learning, 2012
Buku Teks