Não informado. (1976). Ethnic groups. Gordon and Breach Science Publishers.
Style de citation Chicago (17e éd.)Não informado. Ethnic Groups. New York: Gordon and Breach Science Publishers, 1976.
Style de citation MLA (8e éd.)Não informado. Ethnic Groups. Gordon and Breach Science Publishers, 1976.
Attention : ces citations peuvent ne pas être correctes à 100%.