Cita APA (7a ed.)

Yule, G. (1994). The study of language: An introduction. University Press.

Cita Chicago Style (17a ed.)

Yule, George. The Study of Language: An Introduction. Cambridge [etc.]: University Press, 1994.

Cita MLA (9a ed.)

Yule, George. The Study of Language: An Introduction. University Press, 1994.