APA (7th ed.) Citation

Hulbert, A. B. (2012). Historic Highways of America (Vol. 7) Portage Paths - The Keys of the Continent. Project Gutenberg.

Chicago Style (17th ed.) Citation

Hulbert, Archer Butler. Historic Highways of America (Vol. 7) Portage Paths - The Keys of the Continent. Project Gutenberg, 2012.

MLA (9th ed.) Citation

Hulbert, Archer Butler. Historic Highways of America (Vol. 7) Portage Paths - The Keys of the Continent. Project Gutenberg, 2012.

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