APA (7th ed.) Zitazioa
University of Massachusetts. (1975). An aproach to nonformal education in Ecuador.
Chicago Style (17th ed.) Zitazioa
University of Massachusetts. An Aproach to Nonformal Education in Ecuador. 1975.
MLA (9th ed.) Zitazioa
University of Massachusetts. An Aproach to Nonformal Education in Ecuador. 1975.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.