Stepin, V. (2005). Theoretical Knowledge. Springer Netherlands. https://doi.org/10.1007/1-4020-3046-0
Chicago-čujuhus (17. p.)Stepin, Vyacheslav. Theoretical Knowledge. Dordrecht: Springer Netherlands, 2005. https://doi.org/10.1007/1-4020-3046-0.
MLA-čujuhus (9. p.)Stepin, Vyacheslav. Theoretical Knowledge. Springer Netherlands, 2005. https://doi.org/10.1007/1-4020-3046-0.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.