APA (7th ed.) Citation

Koffka, K. (1935). Principles of gestalt psychology. Kegan Paul, Trench, Trubner.

Chicago Style (17th ed.) Citation

Koffka, Kurt. Principles of Gestalt Psychology. London: Kegan Paul, Trench, Trubner, 1935.

MLA (9th ed.) Citation

Koffka, Kurt. Principles of Gestalt Psychology. Kegan Paul, Trench, Trubner, 1935.

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