APA (7th ed.) Citation

Popper, K. R. (1981). Conjectures and refutations: The growth of scientific knowledge (4. ed. (rev.), reprint.). Routledge and Kegan Paul.

Chicago Style (17th ed.) Citation

Popper, Karl R. Conjectures and Refutations: The Growth of Scientific Knowledge. 4. ed. (rev.), reprint. London [u.a.]: Routledge and Kegan Paul, 1981.

MLA (9th ed.) Citation

Popper, Karl R. Conjectures and Refutations: The Growth of Scientific Knowledge. 4. ed. (rev.), reprint. Routledge and Kegan Paul, 1981.