Blackman, William C.
CRC Lewis, 1996
Buku Teks
edited by Harry Freeman
McGraw-Hill, 1990
Buku Teks
Brunner, Calvin R.
McGraw-Hill, 1993
Buku Referensi
edited by Milagros S. Simmons
Lewis Publisher, 1991
Buku Teks
Wentz, Charles A.
McGraw-Hill, 1995
Buku Teks