The races of mankind /
by Ruth Benedict and Gene Weltfish.

APA Citation

Benedict, R., Weltfish, G. (1961). The races of mankind. Revised edition. New York: Public Affairs Committee.

MLA Citation

Benedict, Ruth, 1887-1948, and Gene Weltfish. The Races of Mankind. Revised edition. New York: Public Affairs Committee, 1961.

Warning: These citations may not always be complete (especially for serials).