APA (7th ed.) Citation

Ostwald, H., & Zille, H. (1929). Das Zillebuch. P. Franke.

Chicago Style (17th ed.) Citation

Ostwald, Hans, and Heinrich Zille. Das Zillebuch. Berlin: P. Franke, 1929.

MLA (9th ed.) Citation

Ostwald, Hans, and Heinrich Zille. Das Zillebuch. P. Franke, 1929.