Curt Valentin Gallery (Nova York, Nova York). (1951). Gerhard Marcks. Curt Valentin Gallery.
Cita Chicago (17th ed.)Curt Valentin Gallery (Nova York, Nova York). Gerhard Marcks. New York: Curt Valentin Gallery, 1951.
Cita MLA (9th ed.)Curt Valentin Gallery (Nova York, Nova York). Gerhard Marcks. Curt Valentin Gallery, 1951.
Atenció: Aquestes cites poden no estar 100% correctes.