Pehkonen, E. (1989). Russian Requiem: For soprano and contralto soloists, chorus, and orchestra (Vocal Score.). Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Pehkonen, Elis. Russian Requiem: For Soprano and Contralto Soloists, Chorus, and Orchestra. Vocal Score. Oxford: Oxford University Press, 1989.
Lua MLA (8ú heag.)Pehkonen, Elis. Russian Requiem: For Soprano and Contralto Soloists, Chorus, and Orchestra. Vocal Score. Oxford University Press, 1989.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.