APA (7th ed.) Zitazioa
Ruddock, R. (1980). Perspectives on adult education: Department of adult ..........
Chicago Style (17th ed.) Zitazioa
Ruddock, Ralph. Perspectives on Adult Education: Department of Adult .......... Direct Printers, 1980.
MLA (9th ed.) Zitazioa
Ruddock, Ralph. Perspectives on Adult Education: Department of Adult .......... 1980.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.