APA (7th ed.) Citation

Crystal, D. (1969). What is linguistics? (2. ed.). Arnold.

Chicago Style (17th ed.) Citation

Crystal, David. What Is Linguistics? 2. ed. London: Arnold, 1969.

MLA (9th ed.) Citation

Crystal, David. What Is Linguistics? 2. ed. Arnold, 1969.

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