APA (7th ed.) Citation

Campbell, J. D. (2012). American Military Insignia 1800-1851. Project Gutenberg.

Chicago Style (17th ed.) Citation

Campbell, J. Duncan. American Military Insignia 1800-1851. Project Gutenberg, 2012.

MLA (9th ed.) Citation

Campbell, J. Duncan. American Military Insignia 1800-1851. Project Gutenberg, 2012.

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