Cita APA (7a ed.)

Grohmann, W., & Heldt, W. (1951). Hans Kuhn: Bilder 1950/1951 / [Will Grohmann, Werner Heldt]. Burda.

Cita Chicago Style (17a ed.)

Grohmann, Will, y Werner Heldt. Hans Kuhn: Bilder 1950/1951 / [Will Grohmann, Werner Heldt]. Offenburg: Burda, 1951.

Cita MLA (8a ed.)

Grohmann, Will, y Werner Heldt. Hans Kuhn: Bilder 1950/1951 / [Will Grohmann, Werner Heldt]. Burda, 1951.