APA (7th ed.) Citation

Schmoll, J. A., & Hofmann, H. D. (1967). Rudolf Belling. Galerie Wolfgang Ketterer.

Chicago Style (17th ed.) Citation

Schmoll, Josef A., and Helga D. Hofmann. Rudolf Belling. München: Galerie Wolfgang Ketterer, 1967.

MLA (8th ed.) Citation

Schmoll, Josef A., and Helga D. Hofmann. Rudolf Belling. Galerie Wolfgang Ketterer, 1967.