Cooper, M. (1951). Russian opera. M. Parrish.
Lua i Stíl Chicago (17ú heag.)Cooper, Martin. Russian Opera. London: M. Parrish, 1951.
Lua MLA (8ú heag.)Cooper, Martin. Russian Opera. M. Parrish, 1951.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.