APA (7th ed.) Citation

Gärtner, E., Gerweck, E., & Geitz, K. (1942). Kinderfibel. Konkordia.

Chicago Style (17th ed.) Citation

Gärtner, Emil, Eduard Gerweck, and Karl Geitz. Kinderfibel. Bühl: Konkordia, 1942.

MLA (8th ed.) Citation

Gärtner, Emil, et al. Kinderfibel. Konkordia, 1942.