APA (7th ed.) Citation

Beethoven, L. v., & Wunderlich, F. Zärtliche Liebe.

Chicago Style (17th ed.) Citation

Beethoven, Ludwig van, and Fritz Wunderlich. Zärtliche Liebe.

MLA (9th ed.) Citation

Beethoven, Ludwig van, and Fritz Wunderlich. Zärtliche Liebe.

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