APA (7th ed.) Citation

McIntyre, M. A. (2006). The Cave Boy of the Age of Stone. Project Gutenberg.

Chicago Style (17th ed.) Citation

McIntyre, Margaret A. The Cave Boy of the Age of Stone. Project Gutenberg, 2006.

MLA (9th ed.) Citation

McIntyre, Margaret A. The Cave Boy of the Age of Stone. Project Gutenberg, 2006.

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