Knopp, K. (1948). Problem book in the theory of functions. Dover Publ.
Chicago-čujuhus (17. p.)Knopp, Konrad. Problem Book in the Theory of Functions. New York, NY: Dover Publ, 1948.
MLA-čujuhus (9. p.)Knopp, Konrad. Problem Book in the Theory of Functions. Dover Publ, 1948.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.