APA (7e ed.) Bronvermelding

Firth J. R. (1966). The tongues of men and speech. Oxford University Press.

Chicago (17e ed.) Bronvermelding

Firth J. R. The Tongues of Men and Speech. Londres: Oxford University Press, 1966.

MLA (9e ed.) Bronvermelding

Firth J. R. The Tongues of Men and Speech. Oxford University Press, 1966.