APA (7th ed.) Citation

Hilgard, E. R., & Marquis, D. G. (1940). Conditioning and learning. D. Appleton-Century company.

Chicago Style (17th ed.) Citation

Hilgard, Ernest R., and Donald George Marquis. Conditioning and Learning. New York, London: D. Appleton-Century company, 1940.

MLA (9th ed.) Citation

Hilgard, Ernest R., and Donald George Marquis. Conditioning and Learning. D. Appleton-Century company, 1940.