Lesser, Murray L., author
McGraw-Hill, 1985
Buku Teks
Longkutoy, John J., author
Mutiara Sumber Widya, 1987
Buku Teks
Longkutoy, John J., author
Mutiara Sumber Widya, 1985
Buku Teks
Cox, Michael J., author
Boyd and Faster Pub., 1986
Buku Teks
O`Malley, Timothy J., author
Tab Books, 1983
Buku Teks