APA (7th ed.) Zitazioa

Crystal, D. (1987). The Cambridge encyclopedia of language. U. pr..

Chicago Style (17th ed.) Zitazioa

Crystal, David. The Cambridge Encyclopedia of Language. Cambridge: U. pr., 1987.

MLA (9th ed.) Zitazioa

Crystal, David. The Cambridge Encyclopedia of Language. U. pr., 1987.