Papinot, E., author
Charles E. Tuttle, 1972
Buku Referensi
Brown, Delmer M., author
Russell and Russell, 1955
Buku Teks
Cornell University Press, 1950
Buku Teks
Hall, John W., author
McGraw-Hill, 1965
Buku Teks
Kodansha International : Distributed in the United States by Kodansha America, 1994.
Buku Teks