APA (7th ed.) Citation

Wagner, J., & Ziegler, K. Freiwillige Feuerwehr.

Chicago Style (17th ed.) Citation

Wagner, Johann, and Karl Ziegler. Freiwillige Feuerwehr.

MLA (9th ed.) Citation

Wagner, Johann, and Karl Ziegler. Freiwillige Feuerwehr.

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