editor, Gorton Carruth
Thomas Y. Growell, 1962
Buku Referensi
A DK Publishing, 2001
Buku Teks
Noble, David W
University of minnesota press, 2002
Buku Teks
Findling, John E,
Greenwood Press, 1998
Buku Teks
Joy Hakim, author
Oxford University Press, 2003
Buku Teks