Schmitt, F. F. (1992). Knowledge and belief. Routledge.
Chicago-čujuhus (17. p.)Schmitt, Frederick F. Knowledge and Belief. London ; New York: Routledge, 1992.
MLA-čujuhus (9. p.)Schmitt, Frederick F. Knowledge and Belief. Routledge, 1992.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.