APA (7th ed.) Citation

Stackpole, E. J. (1956). They met at Gettysburg. Eagle Books.

Chicago Style (17th ed.) Citation

Stackpole, Edward J. They Met at Gettysburg. Harrisburg, Pa.: Eagle Books, 1956.

MLA (9th ed.) Citation

Stackpole, Edward J. They Met at Gettysburg. Eagle Books, 1956.

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