APA (7th ed.) Citation

Crystal, D. (1968). What is linguistics? (1. publ.). Arnold.

Chicago Style (17th ed.) Citation

Crystal, David. What Is Linguistics? 1. publ. London: Arnold, 1968.

MLA (9th ed.) Citation

Crystal, David. What Is Linguistics? 1. publ. Arnold, 1968.

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