Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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