Pehkonen, E. (1989). Russian Requiem: For soprano and contralto soloists, chorus, and orchestra (Vocal Score.). Oxford University Press.
Chicago-referens (17:e uppl.)Pehkonen, Elis. Russian Requiem: For Soprano and Contralto Soloists, Chorus, and Orchestra. Vocal Score. Oxford: Oxford University Press, 1989.
MLA-referens (8:e uppl.)Pehkonen, Elis. Russian Requiem: For Soprano and Contralto Soloists, Chorus, and Orchestra. Vocal Score. Oxford University Press, 1989.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.