APA (7th ed.) Citation

Lockhart, E. G. (1939). Improving your personality. Walton Publishing Company.

Chicago Style (17th ed.) Citation

Lockhart, Earl Granger. Improving Your Personality. Chicago, Illinois: Walton Publishing Company, 1939.

MLA (9th ed.) Citation

Lockhart, Earl Granger. Improving Your Personality. Walton Publishing Company, 1939.

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