Citazione Stile APA (7a Edizione)

Popper, K. (1979). Objective knowledge: An evolutionary approach (Rev. ed.). Clarendon Press.

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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