APA (7th ed.) Citation

Crystal, D. (1985). Linguistics / David Crystal (2nd ed.). Penguin.

Chicago Style (17th ed.) Citation

Crystal, David. Linguistics / David Crystal. 2nd ed. Harmondsworth: Penguin, 1985.

MLA (9th ed.) Citation

Crystal, David. Linguistics / David Crystal. 2nd ed. Penguin, 1985.

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