Kupka (New York, Galerie Denise René, october - november 1975).

MLA

Ragon, Michel. Kupka (new York, Galerie Denise René, October - November 1975). New York City: Galerie Denise René, 1975.

APA

Ragon, M. (1975). Kupka (New York, Galerie Denise René, october - november 1975). New York City: Galerie Denise René.

Chicago

Ragon, Michel Kupka (new York, Galerie Denise René, October - November 1975). New York City: Galerie Denise René, 1975.