Calamari, John D., author
West Publishing, 1990
Buku Teks
Calamari, John D., author
West Publishing, 1987
Buku Teks
Bayley, David H.
Oxford University Press, 1994
Buku Teks
Egan, M. David
McGraw-Hill, 1988
Buku Teks
Cortez, Edwin M.
American Library Association, 1987
Buku Referensi