APA (7th ed.) Citation

"Popper, K. (1966). The open society and its enemies.V2. Routledge&Kegan Paul.

Chicago Style (17th ed.) Citation

"Popper, K.R". The Open Society and Its Enemies.V2. Routledge&Kegan Paul, 1966.

MLA (9th ed.) Citation

"Popper, K.R". The Open Society and Its Enemies.V2. Routledge&Kegan Paul, 1966.

Warning: These citations may not always be 100% accurate.