APA (7th ed.) Citation

Popper. (1979). Objective knowledge: An evolutionary approach (Rev. ed.). Clarendon Press Oxford University Press.

Chicago Style (17th ed.) Citation

Popper. Objective Knowledge: An Evolutionary Approach. Rev. ed. Oxford [Eng.] New York: Clarendon Press Oxford University Press, 1979.

MLA (8th ed.) Citation

Popper. Objective Knowledge: An Evolutionary Approach. Rev. ed. Clarendon Press Oxford University Press, 1979.