APA (7th ed.) Citation

Crystal, D. (1988). The English language / David Crystal. Penguin.

Chicago Style (17th ed.) Citation

Crystal, David. The English Language / David Crystal. London: Penguin, 1988.

MLA (9th ed.) Citation

Crystal, David. The English Language / David Crystal. Penguin, 1988.

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