Παραπομπή APA

Yule, G. (2013). The Study of language (4th ed.). Cambridge University Press.

Παραπομπή Chicago Style

Yule, George. The Study of Language. 4th ed. New York: Cambridge University Press, 2013.

Παραπομπή MLA

Yule, George. The Study of Language. 4th ed. Cambridge University Press, 2013.