Cita APA (7th ed.)

Popper, K. (1952). The open society and its enemies. Routledge & Kegan Paul.

Cita Chicago (17th ed.)

Popper, K.R. The Open Society and Its Enemies. London: Routledge & Kegan Paul, 1952.

Cita MLA (8th ed.)

Popper, K.R. The Open Society and Its Enemies. Routledge & Kegan Paul, 1952.