APA (7th ed.) Citation

Butler, S. (1999). Erewhon revisited. Project Gutenberg.

Chicago Style (17th ed.) Citation

Butler, Samuel. Erewhon Revisited. Champaign, Ill: Project Gutenberg, 1999.

MLA (9th ed.) Citation

Butler, Samuel. Erewhon Revisited. Project Gutenberg, 1999.

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