APA (7th ed.) Citation

Protheroe, D., & Henley, W. E. (1915). Invictus: Chorus for male voices. J. Curwen & Sons.

Chicago Style (17th ed.) Citation

Protheroe, Daniel, and William Ernest Henley. Invictus: Chorus for Male Voices. London: J. Curwen & Sons, 1915.

MLA (9th ed.) Citation

Protheroe, Daniel, and William Ernest Henley. Invictus: Chorus for Male Voices. J. Curwen & Sons, 1915.

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