Dyfyniad APA

Popper, K. R. (2002). Conjectures and refutations: The growth of scientific knowledge. New York: Routledge.

Dyfyniad Arddull Chicago

Popper, Karl R. Conjectures and Refutations: The Growth of Scientific Knowledge. New York: Routledge, 2002.

Dyfyniad MLA

Popper, Karl R. Conjectures and Refutations: The Growth of Scientific Knowledge. New York: Routledge, 2002.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.