Cita APA (7a ed.)

Koffka, K. (1963). Principles of gestalt psychology. Harcourt, Brace & World.

Cita Chicago Style (17a ed.)

Koffka, Kurt. Principles of Gestalt Psychology. New York: Harcourt, Brace & World, 1963.

Cita MLA (9a ed.)

Koffka, Kurt. Principles of Gestalt Psychology. Harcourt, Brace & World, 1963.