APA (7th ed.) Citation

Baldwin, J. D. (2008). Ancient America, in Notes on American Archaeology. Project Gutenberg.

Chicago Style (17th ed.) Citation

Baldwin, John D. Ancient America, in Notes on American Archaeology. Project Gutenberg, 2008.

MLA (9th ed.) Citation

Baldwin, John D. Ancient America, in Notes on American Archaeology. Project Gutenberg, 2008.

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