Jones, Edward
Osborne McGraw-Hill , 1990
Buku Teks
edited by Lynne Hayman
CT Meckler, 1990
Buku Teks
Taxali, Ravi Kant
Tata McGraw-Hill, 1994
Buku Teks
Tio Willy
Binarupa Aksara, 1993
Buku Teks
Macek, Rosanne M.
Meckler Corporation, 1988
Buku Referensi