APA (7th ed.) Citation

Crystal, D., & Davy, D. (1983). Investigating English style. Longman.

Chicago Style (17th ed.) Citation

Crystal, David, and Derek Davy. Investigating English Style. Harlow: Longman, 1983.

MLA (9th ed.) Citation

Crystal, David, and Derek Davy. Investigating English Style. Longman, 1983.

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