Berry, B., & Tischler, H. L. (1978). Race and ethnic relations (4th ed.). Houghton Mifflin.
Lua i Stíl Chicago (17ú heag.)Berry, Brewton, agus Henry L. Tischler. Race and Ethnic Relations. 4th ed. Boston: Houghton Mifflin, 1978.
Lua MLA (8ú heag.)Berry, Brewton, agus Henry L. Tischler. Race and Ethnic Relations. 4th ed. Houghton Mifflin, 1978.
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