APA (7th ed.) Citation

Wallwork, J. F. (1978). Language and linguistics: An introduction to the study of language. Heinemann.

Chicago Style (17th ed.) Citation

Wallwork, Jean F. Language and Linguistics: An Introduction to the Study of Language. London: Heinemann, 1978.

MLA (9th ed.) Citation

Wallwork, Jean F. Language and Linguistics: An Introduction to the Study of Language. Heinemann, 1978.