APA (7th ed.) Citation

Mills, E. A. (2013). The Spell of the Rockies. Project Gutenberg.

Chicago Style (17th ed.) Citation

Mills, Enos Abijah. The Spell of the Rockies. Project Gutenberg, 2013.

MLA (9th ed.) Citation

Mills, Enos Abijah. The Spell of the Rockies. Project Gutenberg, 2013.

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