APA (7th ed.) Zitazioa

(1959). The third curriculum; student activities in American education.

Chicago Style (17th ed.) Zitazioa

The Third Curriculum; Student Activities in American Education. 1959.

MLA (9th ed.) Zitazioa

The Third Curriculum; Student Activities in American Education. 1959.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.