Babb, Hugh W., author
Foundation Press , 1959
Buku Teks
Gould, William B., IV, author
MIT Press, 1982
Buku Teks
Twomey, David P.
South-Western Pub, 1985
Buku Teks
Leslie, Douglas L., author
West Publishing Company, 1979
Buku Teks
Jansen, Ernst P., author
Kluwer, 1994
Buku Teks