APA (7th ed.) Citation

Crystal, D. (1974). What is linguistics? (3.ed.). Arnold.

Chicago Style (17th ed.) Citation

Crystal, David. What Is Linguistics? 3.ed. London: Arnold, 1974.

MLA (9th ed.) Citation

Crystal, David. What Is Linguistics? 3.ed. Arnold, 1974.

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