APA (7th ed.) Citation

Wagner, R., & König, R. Tristan und Isolde: Textbuch.

Chicago Style (17th ed.) Citation

Wagner, Richard, and Rosemarie König. Tristan Und Isolde: Textbuch.

MLA (9th ed.) Citation

Wagner, Richard, and Rosemarie König. Tristan Und Isolde: Textbuch.

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