APA (7th ed.) Citation

Popper, S. K. R., & Popper, K. R. S. (1966). The open society and its enemies ([5th ed. rev.].). Princeton University Press.

Chicago Style (17th ed.) Citation

Popper, Sir Karl Raimund, and Karl Raimund Sir Popper. The Open Society and Its Enemies. [5th ed. rev.]. New Jersey: Princeton University Press, 1966.

MLA (9th ed.) Citation

Popper, Sir Karl Raimund, and Karl Raimund Sir Popper. The Open Society and Its Enemies. [5th ed. rev.]. Princeton University Press, 1966.