Stepin, V. (2005). Theoretical Knowledge. Springer Netherlands. https://doi.org/10.1007/1-4020-3046-0
Lua i Stíl Chicago (17ú heag.)Stepin, Vyacheslav. Theoretical Knowledge. Dordrecht: Springer Netherlands, 2005. https://doi.org/10.1007/1-4020-3046-0.
Lua MLA (9ú heag.)Stepin, Vyacheslav. Theoretical Knowledge. Springer Netherlands, 2005. https://doi.org/10.1007/1-4020-3046-0.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.