Yule, G. (1985). The study of language: An introduction. Cambridge University Press.
Lua i Stíl Chicago (17ú heag.)Yule, George. The Study of Language: An Introduction. Cambridge: Cambridge University Press, 1985.
Lua MLA (9ú heag.)Yule, George. The Study of Language: An Introduction. Cambridge University Press, 1985.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.