APA (7th ed.) Citation

Wagner, R. Siegfried Idyl. Boosey & Hawkes.

Chicago Style (17th ed.) Citation

Wagner, Richard. Siegfried Idyl. London [etc.]: Boosey & Hawkes.

MLA (9th ed.) Citation

Wagner, Richard. Siegfried Idyl. Boosey & Hawkes.

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