Cita APA (7a ed.)

Schilpp, P. A. (1974). The philosophy of Karl Popper. Open Court.

Cita Chicago Style (17a ed.)

Schilpp, Paul Arthur. The Philosophy of Karl Popper. La Salle, Illinois: Open Court, 1974.

Cita MLA (9a ed.)

Schilpp, Paul Arthur. The Philosophy of Karl Popper. Open Court, 1974.