Citazione Stile APA (7a Edizione)

Schaefer, R. T. (1996). Racial and ethnic groups (6th ed.). Harper Collins College Publisher.

Citazione stile Chigago Style (17a edizione)

Schaefer, Richard T. Racial and Ethnic Groups. 6th ed. New York: Harper Collins College Publisher, 1996.

Citatione MLA (9a ed.)

Schaefer, Richard T. Racial and Ethnic Groups. 6th ed. Harper Collins College Publisher, 1996.