APA (7th ed.) Zitazioa
Yule, G. (1985). The study of language: An introduction. Cambridge.
Chicago Style (17th ed.) Zitazioa
Yule, George. The Study of Language: An Introduction. New York: Cambridge, 1985.
MLA (9th ed.) Zitazioa
Yule, George. The Study of Language: An Introduction. Cambridge, 1985.
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