APA (7th ed.) Citation

Wagner, R., Jameson, F., & Ernst, A. (1910). Die Walküre. Schott.

Chicago Style (17th ed.) Citation

Wagner, Richard, Frederick Jameson, and Alfred Ernst. Die Walküre. Mainz [u. a.]: Schott, 1910.

MLA (9th ed.) Citation

Wagner, Richard, et al. Die Walküre. Schott, 1910.