Kopper, J. M. The evolution of Nabokov's evolution: John M. Kopper. Nabokov at Cornell.(2003).
Lua i Stíl Chicago (17ú heag.)Kopper, John M. "The Evolution of Nabokov's Evolution: John M. Kopper." Nabokov at Cornell.(2003) .
Lua MLA (8ú heag.)Kopper, John M. "The Evolution of Nabokov's Evolution: John M. Kopper." Nabokov at Cornell.(2003), .
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.