APA aipamena

SCHAEFER, R. T. Racial and ethnic groups.-- ed.2. Litle.

Chicago Style aipamena

SCHAEFER, Richard T. Racial and Ethnic Groups.-- Ed.2. Boston: Litle.

MLA aipamena

SCHAEFER, Richard T. Racial and Ethnic Groups.-- Ed.2. Litle.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.