APA (7th ed.) Citation

Popper, D. (1948). Requiem, opus 66 for three cellos and piano. International Music.

Chicago Style (17th ed.) Citation

Popper, David. Requiem, Opus 66 for Three Cellos and Piano. New York: International Music, 1948.

MLA (9th ed.) Citation

Popper, David. Requiem, Opus 66 for Three Cellos and Piano. International Music, 1948.