APA (7th ed.) Citation

Brown, A. (1962). Geology and the Gettysburg Campaign. Commonwealth of Pennsylvania, Dept. of Internal Affairs, Bureau of Topographic and Geologic Survey.

Chicago Style (17th ed.) Citation

Brown, Andrew. Geology and the Gettysburg Campaign. Harrisburg: Commonwealth of Pennsylvania, Dept. of Internal Affairs, Bureau of Topographic and Geologic Survey, 1962.

MLA (9th ed.) Citation

Brown, Andrew. Geology and the Gettysburg Campaign. Commonwealth of Pennsylvania, Dept. of Internal Affairs, Bureau of Topographic and Geologic Survey, 1962.