APA (7th ed.) Citation

Butler, S., & Mudford, P. (1985). Erewhon. Penguin Books.

Chicago Style (17th ed.) Citation

Butler, Samuel, and Peter Mudford. Erewhon. London, England ; New York, N.Y., U.S.A.: Penguin Books, 1985.

MLA (9th ed.) Citation

Butler, Samuel, and Peter Mudford. Erewhon. Penguin Books, 1985.