APA (7th ed.) Citation

Howard, R. E. (2013). The Devil in Iron. Project Gutenberg.

Chicago Style (17th ed.) Citation

Howard, Robert E. The Devil in Iron. Project Gutenberg, 2013.

MLA (9th ed.) Citation

Howard, Robert E. The Devil in Iron. Project Gutenberg, 2013.

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