Cita APA (7a ed.)

Smith, B., & Ehrenfels, C. (1988). Foundations of Gestalt theory. Philosophia Verlag.

Cita Chicago Style (17a ed.)

Smith, Barry, y Christian Ehrenfels. Foundations of Gestalt Theory. München: Philosophia Verlag, 1988.

Cita MLA (8a ed.)

Smith, Barry, y Christian Ehrenfels. Foundations of Gestalt Theory. Philosophia Verlag, 1988.