APA (7th ed.) Citation

Butler, S. (2004). Luck, or Cunning, as the Main Means of Organic Modification. Project Gutenberg.

Chicago Style (17th ed.) Citation

Butler, Samuel. Luck, or Cunning, as the Main Means of Organic Modification. Project Gutenberg, 2004.

MLA (9th ed.) Citation

Butler, Samuel. Luck, or Cunning, as the Main Means of Organic Modification. Project Gutenberg, 2004.

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