Popper, K. (1961). The logic scientific discovery. Science.
Chicago-čujuhus (17. p.)Popper, Karl. The Logic Scientific Discovery. New York, Estados Unidos: Science, 1961.
MLA-čujuhus (9. p.)Popper, Karl. The Logic Scientific Discovery. Science, 1961.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.