Cita APA (7th ed.)

Sibelius, J., & Keller, R. S. (1933). Black roses, op.36, no.1. Breitkopf & Hartel.

Cita Chicago (17th ed.)

Sibelius, Jean, i Robert S. Keller. Black Roses, Op.36, No.1. New York: Breitkopf & Hartel, 1933.

Cita MLA (9th ed.)

Sibelius, Jean, i Robert S. Keller. Black Roses, Op.36, No.1. Breitkopf & Hartel, 1933.