Cita APA (7th ed.)

Zerull, L., & Nöfer, W. (2009). Werner Nöfer.

Cita Chicago (17th ed.)

Zerull, Ludwig, i Werner Nöfer. Werner Nöfer. [Hannover], 2009.

Cita MLA (8th ed.)

Zerull, Ludwig, i Werner Nöfer. Werner Nöfer. 2009.