APA (7th ed.) Citation

Hartmann, G. W. (1935). Gestalt psychology: A survey of facts and principles. Ronald Press Company.

Chicago Style (17th ed.) Citation

Hartmann, George W. Gestalt Psychology: A Survey of Facts and Principles. New York: Ronald Press Company, 1935.

MLA (9th ed.) Citation

Hartmann, George W. Gestalt Psychology: A Survey of Facts and Principles. Ronald Press Company, 1935.