APA (7th ed.) Citation

Nesbit, W. D., & Young, E. (2012). An Alphabet of History. Project Gutenberg.

Chicago Style (17th ed.) Citation

Nesbit, Wilbur D., and Ellsworth Young. An Alphabet of History. Project Gutenberg, 2012.

MLA (9th ed.) Citation

Nesbit, Wilbur D., and Ellsworth Young. An Alphabet of History. Project Gutenberg, 2012.

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