Page, Clive
Multi Media, 1985
Buku Referensi
Etter, Delores Maria, 1947-
Bina Aksara, 1989
Buku Teks SO
Gunawan P.
Ganesa Exact, 1988
Buku Teks
Davis, Gordon B.
McGraw-Hill, 1988
Buku Teks
Etter, Delores Maria, 1947-
Benjamin/Cummings, 1987
Buku Teks SO