Reddick, Randy, author
Yayasan Obor Indonesia, 1996
Buku Teks
Parkinson, C. Northcote (Cyril Northcote), 1909-1993, author
Pustaka Binaman Pressindo, 1983
Buku Teks
Cedeno, Nancy, author
Elex Media Komputindo, 1996
Buku Referensi
Cedeno, Nancy, author
Elex Media Komputindo, 1996
Buku Teks
Kent, Peter, author
Andi, 1996
Buku Teks