Cita APA (7th ed.)

Lehmbruck, W., & Heller, R. (1973). Wilhelm Lehmbruck.

Cita Chicago (17th ed.)

Lehmbruck, Wilhelm, i Reinhold Heller. Wilhelm Lehmbruck. Berlin, 1973.

Cita MLA (8th ed.)

Lehmbruck, Wilhelm, i Reinhold Heller. Wilhelm Lehmbruck. 1973.

Atenció: Aquestes cites poden no estar 100% correctes.