Cite

Strategic map of Central Europe showing the international frontiers / prepared in the War College Division, General Staff, War Department ; Arch. B. Williams and Geo. F. Bontz, Draftsmen.

MLA

Bontz, Geo. F., et al. Strategic Map of Central Europe Showing the International Frontiers / Prepared in the War College Division, General Staff, War Department ; Arch. B. Williams and Geo. F. Bontz, Draftsmen. War Dept., 1915. https://collections.library.yale.edu/catalog/15259069.

APA, 6th edition

Bontz, G. F., United States. War Dept. General Staff. War College Division, W., & B, A. (1915). Strategic map of Central Europe showing the international frontiers / prepared in the War College Division, General Staff, War Department ; Arch. B. Williams and Geo. F. Bontz, Draftsmen. [Maps]. War Dept., https://collections.library.yale.edu/catalog/15259069.