Cita APA (7a ed.)

Rovsing Olsen, P. (1969). Duo: For accordion and piano op. 56 / Poul Rovsing Olsen. Hohner.

Cita Chicago Style (17a ed.)

Rovsing Olsen, Poul. Duo: For Accordion and Piano Op. 56 / Poul Rovsing Olsen. Trossingen: Hohner, 1969.

Cita MLA (8a ed.)

Rovsing Olsen, Poul. Duo: For Accordion and Piano Op. 56 / Poul Rovsing Olsen. Hohner, 1969.