APA (7th ed.) Citation

Popper, K. (1952). The open society and its enemies (2nd rev. ed.). Routledge & Kegan Paul.

Chicago Style (17th ed.) Citation

Popper, K.R. The Open Society and Its Enemies. 2nd rev. ed. London: Routledge & Kegan Paul, 1952.

MLA (8th ed.) Citation

Popper, K.R. The Open Society and Its Enemies. 2nd rev. ed. Routledge & Kegan Paul, 1952.