APA (7th ed.) Citation

Popper, K. R. (1972). Objective knowledge: An evolutionary approach. Clarendon Press.

Chicago Style (17th ed.) Citation

Popper, Karl Raimund. Objective Knowledge: An Evolutionary Approach. Oxford: Clarendon Press, 1972.

MLA (9th ed.) Citation

Popper, Karl Raimund. Objective Knowledge: An Evolutionary Approach. Clarendon Press, 1972.

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