APA (7th ed.) Citation

Harper, H. H. (2013). A Journey in Southeastern Mexico. Project Gutenberg.

Chicago Style (17th ed.) Citation

Harper, Henry Howard. A Journey in Southeastern Mexico. Project Gutenberg, 2013.

MLA (9th ed.) Citation

Harper, Henry Howard. A Journey in Southeastern Mexico. Project Gutenberg, 2013.

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