Citazione Stile APA (7a Edizione)

Popper, K. R. (1968). Conjectures and refutations =: Conjeturas y refutaciones. Harper & Row.

Citazione stile Chigago Style (17a edizione)

Popper, Karl R. Conjectures and Refutations =: Conjeturas Y Refutaciones. New York: Harper & Row, 1968.

Citatione MLA (9a ed.)

Popper, Karl R. Conjectures and Refutations =: Conjeturas Y Refutaciones. Harper & Row, 1968.