Cita APA (7a ed.)

Popper, K. R. (1956). The open society and its enemies. Princeton University Press.

Cita Chicago Style (17a ed.)

Popper, Karl R. The Open Society and Its Enemies. Princeton: Princeton University Press, 1956.

Cita MLA (8a ed.)

Popper, Karl R. The Open Society and Its Enemies. Princeton University Press, 1956.