Não informado. (1976). Ethnic groups. Gordon and Breach Science Publishers.
Chicagoスタイル(17版)引用形式Não informado. Ethnic Groups. New York: Gordon and Breach Science Publishers, 1976.
MLA(8版)引用形式Não informado. Ethnic Groups. Gordon and Breach Science Publishers, 1976.
警告: この引用は必ずしも正確ではありません.