Howell, Rate A.
Dryden Press, 1988
Buku Referensi
The Foundation Press, Inc., 1975
Buku Teks
Epstein, David G.
West Pub. Co, 1988.
Buku Teks
Konvitz, Milton Ridvas, 1908-2003
Cornell University Press, 1963
Buku Teks
Garrison, Marsha
Thomson/West, 2009
Buku Teks