APA (7th ed.) Zitazioa
Hopkins, C. D. (1980). Understanding educational research: An inquiry approach. Merrill.
Chicago Style (17th ed.) Zitazioa
Hopkins, Charles D. Understanding Educational Research: An Inquiry Approach. Columbus, Ohio: Merrill, 1980.
MLA (9th ed.) Zitazioa
Hopkins, Charles D. Understanding Educational Research: An Inquiry Approach. Merrill, 1980.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.