APA (7th ed.) Citation

Popper, S. K. R. (1966). The open society and its enemies. Princeton University Press.

Chicago Style (17th ed.) Citation

Popper, Sir Karl Raimund. The Open Society and Its Enemies. Princeton, N J: Princeton University Press, 1966.

MLA (9th ed.) Citation

Popper, Sir Karl Raimund. The Open Society and Its Enemies. Princeton University Press, 1966.