APA (7th ed.) Zitazioa

EUROPA PUBLICATIONS LTDA. (1997). The world of learning 1998 (ed.48.). Europa Publications limited.

Chicago Style (17th ed.) Zitazioa

EUROPA PUBLICATIONS LTDA. The World of Learning 1998. ed.48. London: Europa Publications limited, 1997.

MLA (9th ed.) Zitazioa

EUROPA PUBLICATIONS LTDA. The World of Learning 1998. ed.48. Europa Publications limited, 1997.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.