APA aipamena

(2000). Coursetaking & Standards. U.S. Department of Education.

Chicago Style aipamena

Coursetaking & Standards. U.S. Department of Education, 2000.

MLA aipamena

Coursetaking & Standards. U.S. Department of Education, 2000.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.