APA (7th ed.) Citation

Allport, G. W., Vernon, P. E., & Powers, E. (1933). Studies in expressive movement. Macmillan Company.

Chicago Style (17th ed.) Citation

Allport, Gordon W., Philip E. Vernon, and Edwin Powers. Studies in Expressive Movement. New York: Macmillan Company, 1933.

MLA (9th ed.) Citation

Allport, Gordon W., et al. Studies in Expressive Movement. Macmillan Company, 1933.