APA (7th ed.) Citation

Holst, G., & Lasker, V. (1923). The perfect fool: Opera in one act : op. 39. Novello.

Chicago Style (17th ed.) Citation

Holst, Gustav, and Vally Lasker. The Perfect Fool: Opera in One Act : Op. 39. London: Novello, 1923.

MLA (8th ed.) Citation

Holst, Gustav, and Vally Lasker. The Perfect Fool: Opera in One Act : Op. 39. Novello, 1923.

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