APA aipamena

(2006). Condition of Education 2006. U.S. Department of Education.

Chicago Style aipamena

Condition of Education 2006. U.S. Department of Education, 2006.

MLA aipamena

Condition of Education 2006. U.S. Department of Education, 2006.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.