Schmalenbach, W. (1959). Ben Nicholson.
Cita Chicago (17th ed.)Schmalenbach, Werner. Ben Nicholson. Hannover, 1959.
Cita MLA (8th ed.)Schmalenbach, Werner. Ben Nicholson. 1959.
Atenció: Aquestes cites poden no estar 100% correctes.
Cita APA (7th ed.)