APA (7th ed.) Citation

Ketterer, E., & Ketterer, E. Männerchöre. Böhm.

Chicago Style (17th ed.) Citation

Ketterer, Ernst, and Ernst Ketterer. Männerchöre. Augsburg: Böhm.

MLA (9th ed.) Citation

Ketterer, Ernst, and Ernst Ketterer. Männerchöre. Böhm.

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