Bethea, D. M. Nabokov and Blok: David M. Bethea. The Garland companion to Vladimir Nabokov.(1995).
Lua i Stíl Chicago (17ú heag.)Bethea, David M. "Nabokov and Blok: David M. Bethea." The Garland Companion to Vladimir Nabokov.(1995) .
Lua MLA (8ú heag.)Bethea, David M. "Nabokov and Blok: David M. Bethea." The Garland Companion to Vladimir Nabokov.(1995), .
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.