APA (7th ed.) Citation

Crystal, D. (1971). Linguistics (Repr. with revisions.). Penguin Books.

Chicago Style (17th ed.) Citation

Crystal, David. Linguistics. Repr. with revisions. Harmondsworth: Penguin Books, 1971.

MLA (8th ed.) Citation

Crystal, David. Linguistics. Repr. with revisions. Penguin Books, 1971.

Warning: These citations may not always be 100% accurate.