APA (7th ed.) Citation

Walsh, J. M. (2006). The Lost Valley. Project Gutenberg.

Chicago Style (17th ed.) Citation

Walsh, J. M. The Lost Valley. Project Gutenberg, 2006.

MLA (9th ed.) Citation

Walsh, J. M. The Lost Valley. Project Gutenberg, 2006.

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