The Gettysburg national military park. :
The location of the monuments, markers, and tablets on the battlefield of Gettysburg /
Issued by Office of the quartermaster general, War department.

APA Citation

United States. Army. Quartermaster Corps. (1932). The Gettysburg national military park.: The location of the monuments, markers, and tablets on the battlefield of Gettysburg. Washington: U.S. Govt. Print. Off..

MLA Citation

United States. Army. Quartermaster Corps. The Gettysburg National Military Park.: The Location of the Monuments, Markers, And Tablets On the Battlefield of Gettysburg. Washington: U.S. Govt. Print. Off., 1932.

Warning: These citations may not always be complete (especially for serials).