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. Longman, 1983.

MLA (8th ed.) Citation

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

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