Knopp, K. (1945). Theory of functions. Dover.
Lua i Stíl Chicago (17ú heag.)Knopp, Konrad. Theory of Functions. Nueva York: Dover, 1945.
Lua MLA (9ú heag.)Knopp, Konrad. Theory of Functions. Dover, 1945.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.