APA (7th ed.) Citation

Stackpole, E. J. (1984). They met at Gettysburg. Bonanza Books.

Chicago Style (17th ed.) Citation

Stackpole, Edward J. They Met at Gettysburg. New York: Bonanza Books, 1984.

MLA (9th ed.) Citation

Stackpole, Edward J. They Met at Gettysburg. Bonanza Books, 1984.