Dokumentuaren aipamena

APA (7th ed.) Zitazioa
ebrary, Inc, & Walker, A. (2005). Growing older in Europe. Open University Press.
Chicago Style (17th ed.) Zitazioa
ebrary, Inc, eta Alan Walker. Growing Older in Europe. Maidenhead: Open University Press, 2005.
MLA (9th ed.) Zitazioa
ebrary, Inc, eta Alan Walker. Growing Older in Europe. Open University Press, 2005.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.