Cita APA (7th ed.)

Burkhardt, A. (1983). Let's sing together. Volk und Wissen.

Cita Chicago (17th ed.)

Burkhardt, Albert. Let's Sing Together. Berlin: Volk und Wissen, 1983.

Cita MLA (8th ed.)

Burkhardt, Albert. Let's Sing Together. Volk und Wissen, 1983.