APA (7th ed.) Citation

Rau, C. (2012). North American Stone Implements. Project Gutenberg.

Chicago Style (17th ed.) Citation

Rau, Charles. North American Stone Implements. Project Gutenberg, 2012.

MLA (9th ed.) Citation

Rau, Charles. North American Stone Implements. Project Gutenberg, 2012.

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