Halbertam, David
Avon Books, 1990
Buku Teks
Tate, Allen
New York: GP Putnam's Sons, 1938
Buku Teks
Swiggett, Howard
New York: Ballantine Books, 1954
Buku Teks
Bosse, Malcolm
New York: Bantam Books, 1983
Buku Teks
Brown, Sandra
Warner Books, 2000
Buku Teks