APA (7th ed.) Citation

Downey, F. (1962). The guns at Gettysburg. Collier Books.

Chicago Style (17th ed.) Citation

Downey, Fairfax. The Guns at Gettysburg. New York: Collier Books, 1962.

MLA (8th ed.) Citation

Downey, Fairfax. The Guns at Gettysburg. Collier Books, 1962.

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