Cita APA (7th ed.)

Piene, O. (2016). Otto Piene: Black melt & light rays. Galerie Ludorff (Düsseldorf).

Cita Chicago (17th ed.)

Piene, Otto. Otto Piene: Black Melt & Light Rays. Düsseldorf: Galerie Ludorff (Düsseldorf), 2016.

Cita MLA (8th ed.)

Piene, Otto. Otto Piene: Black Melt & Light Rays. Galerie Ludorff (Düsseldorf), 2016.

Atenció: Aquestes cites poden no estar 100% correctes.