Currie, Elliott, author
Little, Brown, 1984
Buku Teks
Johnson, Daniel Milo, author
Duke University Press, 1981
Buku Teks
Wright, Gwendolyn, author
MIT Press, 2001
Buku Teks
Horowitz, Irving Louis, author
Duke University Press , 2984
Buku Teks
edited by Egbert De Vries, Jose Medina Echavarria
UNESCO, 1967
Buku Teks