APA (7th ed.) Citation

Union, A. S. (2014). History of Orrin Pierce. Project Gutenberg.

Chicago Style (17th ed.) Citation

Union, American Sunday-School. History of Orrin Pierce. Project Gutenberg, 2014.

MLA (9th ed.) Citation

Union, American Sunday-School. History of Orrin Pierce. Project Gutenberg, 2014.

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