APA (7th ed.) Citation

Stackpole, E. J., & Nye, W. S. (1960). The Battle of Gettysburg: A guided tour. Stackpole.

Chicago Style (17th ed.) Citation

Stackpole, Edward J., and Wilbur Sturtevant Nye. The Battle of Gettysburg: A Guided Tour. Harrisburg, Pa.: Stackpole, 1960.

MLA (9th ed.) Citation

Stackpole, Edward J., and Wilbur Sturtevant Nye. The Battle of Gettysburg: A Guided Tour. Stackpole, 1960.