edited by Sydney Nettleton Fisher
Cornell University Press , 1955
Buku Teks
Guenther, Herbert V., author
Shambhala, 1976
Buku Teks
Huizinga, Johan, author
New York: Doubleday, 1956
Buku Teks
Lenczowski, George, author
Cornell University Press, 1956
Buku Teks
Bill, James A., author
Little, Brown, 1979
Buku Teks