APA (7th ed.) Citation

Wagner, R., & Mottl, F. Die Walküre. C.F. Peters.

Chicago Style (17th ed.) Citation

Wagner, Richard, and Felix Mottl. Die Walküre. Leipzig: C.F. Peters.

MLA (8th ed.) Citation

Wagner, Richard, and Felix Mottl. Die Walküre. C.F. Peters.

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