APA (7th ed.) Citation

Howard, R. E. (2013). The Hyborian Age. Project Gutenberg.

Chicago Style (17th ed.) Citation

Howard, Robert E. The Hyborian Age. Project Gutenberg, 2013.

MLA (9th ed.) Citation

Howard, Robert E. The Hyborian Age. Project Gutenberg, 2013.

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