APA (7th ed.) Citation

Ruhrberg, K. (1973). Drei Antworten an Gerd Winkler: Karl Ruhrberg. Kunstforum.

Chicago Style (17th ed.) Citation

Ruhrberg, Karl. "Drei Antworten an Gerd Winkler: Karl Ruhrberg." Kunstforum 1973.

MLA (8th ed.) Citation

Ruhrberg, Karl. "Drei Antworten an Gerd Winkler: Karl Ruhrberg." Kunstforum, 1973.

Warning: These citations may not always be 100% accurate.