APA aipamena

Schaefer, R. T. (1988). Racial and ethnic groups (3rd ed.). Scott, Foresman.

Chicago Style aipamena

Schaefer, Richard T. Racial and Ethnic Groups. 3rd ed. Glenview, Ill.: Scott, Foresman, 1988.

MLA aipamena

Schaefer, Richard T. Racial and Ethnic Groups. 3rd ed. Scott, Foresman, 1988.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.