APA (7th ed.) Citation

Krumbach, W., & Friebel, I. (1975). Unser Kullerball (8.Aufl.). Kinderbuchverlag.

Chicago Style (17th ed.) Citation

Krumbach, Walter, and Ingeborg Friebel. Unser Kullerball. 8.Aufl. Berlin: Kinderbuchverlag, 1975.

MLA (8th ed.) Citation

Krumbach, Walter, and Ingeborg Friebel. Unser Kullerball. 8.Aufl. Kinderbuchverlag, 1975.

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