APA (7th ed.) Citation

Macfarren, G. A., & Oxenford, J. (1864). Helvellyn: An opera in four acts. Cramer.

Chicago Style (17th ed.) Citation

Macfarren, G. A., and John Oxenford. Helvellyn: An Opera in Four Acts. London: Cramer, 1864.

MLA (8th ed.) Citation

Macfarren, G. A., and John Oxenford. Helvellyn: An Opera in Four Acts. Cramer, 1864.

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