APA (7th ed.) Citation

Hollingworth, H. L., & Poffenberger, A. T. (1923). Applied psychology. D. Appleton and Company.

Chicago Style (17th ed.) Citation

Hollingworth, H. L., and A. T. Poffenberger. Applied Psychology. New York, N.Y.: D. Appleton and Company, 1923.

MLA (9th ed.) Citation

Hollingworth, H. L., and A. T. Poffenberger. Applied Psychology. D. Appleton and Company, 1923.