Popper, K. R. (1968). Conjectures and refutations =: Conjeturas y refutaciones. Harper & Row.
Cita Chicago Style (17a ed.)Popper, Karl R. Conjectures and Refutations =: Conjeturas Y Refutaciones. New York: Harper & Row, 1968.
Cita MLA (9a ed.)Popper, Karl R. Conjectures and Refutations =: Conjeturas Y Refutaciones. Harper & Row, 1968.
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