Longkutoy, John J.
Mutiara Sumber Widya, 1985
Buku Teks
Inman, Don
John Wiley & Sons, 1981
Buku Teks
Khan, Emdad H.
Oxford & IBH Publishing, 1987
Buku Teks
Cox, Michael J.
Boyd and Faster Pub., 1986
Buku Teks
Mandell, Steven L.
West Publishing, 1983
Buku Teks