APA (7th ed.) Citation

Popper, K. R. (1972). Conjectures and refutations: The growth of scientific knowledge (4. ed., rev.). Routledge and Kegan Paul.

Chicago Style (17th ed.) Citation

Popper, Karl R. Conjectures and Refutations: The Growth of Scientific Knowledge. 4. ed., rev. London: Routledge and Kegan Paul, 1972.

MLA (9th ed.) Citation

Popper, Karl R. Conjectures and Refutations: The Growth of Scientific Knowledge. 4. ed., rev. Routledge and Kegan Paul, 1972.