Schaefer, R. T. (1990). Racial and ethnic groups (4th ed.). Harper Collins.
Chicago Style (17th ed.) CitationSchaefer, Richard T. Racial and Ethnic Groups. 4th ed. USA: Harper Collins, 1990.
MLA citiranjeSchaefer, Richard T. Racial and Ethnic Groups. 4th ed. Harper Collins, 1990.
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