APA-referens (7:e uppl.)

Yule, G. (2006). The study of language (3rd ed.). Cambridge University Press.

Chicago-referens (17:e uppl.)

Yule, George. The Study of Language. 3rd ed. Cambridge [England]: Cambridge University Press, 2006.

MLA-referens (9:e uppl.)

Yule, George. The Study of Language. 3rd ed. Cambridge University Press, 2006.