(1965). Gerhart Bergmann: Grabowski Gallery, London. Grabowski Gallery.
Cita Chicago (17th ed.)Gerhart Bergmann: Grabowski Gallery, London. London: Grabowski Gallery, 1965.
Cita MLA (8th ed.)Gerhart Bergmann: Grabowski Gallery, London. Grabowski Gallery, 1965.
Atenció: Aquestes cites poden no estar 100% correctes.