APA (7th ed.) Citation

Birmingham, G. A. (2014). The Smuggler's Cave. Project Gutenberg.

Chicago Style (17th ed.) Citation

Birmingham, George A. The Smuggler's Cave. Project Gutenberg, 2014.

MLA (9th ed.) Citation

Birmingham, George A. The Smuggler's Cave. Project Gutenberg, 2014.

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