APA (7th ed.) Zitazioa

O' Grady , W. (1989). Contemporary linguistics: An introduction. St. Martin's pr..

Chicago Style (17th ed.) Zitazioa

O' Grady , William. Contemporary Linguistics: An Introduction. NewYork: St. Martin's pr., 1989.

MLA (9th ed.) Zitazioa

O' Grady , William. Contemporary Linguistics: An Introduction. St. Martin's pr., 1989.