APA (7th ed.) Citation

Strauss, R. Don Juan, op. 20. Boosey & Hawkes.

Chicago Style (17th ed.) Citation

Strauss, Richard. Don Juan, Op. 20. London: Boosey & Hawkes.

MLA (9th ed.) Citation

Strauss, Richard. Don Juan, Op. 20. Boosey & Hawkes.

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