Sorensen, Theodore C., author
Columbia University Press, 1964
Buku Teks
Taket, Ann
John Wiley & Sons, 2000
Buku Teks
edited by Hermann Brandstatter
Academic Press, 1982
Buku Teks
Raven press, 1983
Buku Teks
Hamburg, Morris, author
Harcourt Brace Jovanovich, Pub., 1991
Buku Teks