Cita APA (7a ed.)

Backhaus, P. (2001). Harms Arbeitsheft Berlin (Dr. A, 1.). Schroedel.

Cita Chicago Style (17a ed.)

Backhaus, Peter. Harms Arbeitsheft Berlin. Dr. A, 1. Hannover: Schroedel, 2001.

Cita MLA (9a ed.)

Backhaus, Peter. Harms Arbeitsheft Berlin. Dr. A, 1. Schroedel, 2001.