APA (7th ed.) Citation

Foster, J. H. (2013). Secrets of the Andes. Project Gutenberg.

Chicago Style (17th ed.) Citation

Foster, James H. Secrets of the Andes. Project Gutenberg, 2013.

MLA (9th ed.) Citation

Foster, James H. Secrets of the Andes. Project Gutenberg, 2013.

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