Cita APA (7th ed.)

Gassner, H., & Klingsöhr-Leroy, C. (2003). Naum Gabo, Fritz Winter: 1930-1940.

Cita Chicago (17th ed.)

Gassner, Hubertus, i Cathrin Klingsöhr-Leroy. Naum Gabo, Fritz Winter: 1930-1940. München [u.a.], 2003.

Cita MLA (8th ed.)

Gassner, Hubertus, i Cathrin Klingsöhr-Leroy. Naum Gabo, Fritz Winter: 1930-1940. 2003.