Konrad Klapheck.

MLA

Breton, André, et al. Konrad Klapheck. Rotterdam: Museum Boymans-van Beuningen, 1974.

APA

Breton, A., Hammacher-van den Brande, R., Jaguer, E., Pierre, J., & Schmied, W. (1974). Konrad Klapheck. Rotterdam: Museum Boymans-van Beuningen.

Chicago

Breton, André, Renilde Hammacher-van den Brande, Edouard Jaguer, José Pierre, and Wieland Schmied. Konrad Klapheck. Rotterdam: Museum Boymans-van Beuningen, 1974.