Cite

Stanford's half-inch map of the battle front between the Somme and Soissons.

MLA

Ltd, Edward Stanford. Stanford's Half-Inch Map of the Battle Front between the Somme and Soissons. 0AD. https://collections.library.yale.edu/catalog/15237951.

APA, 6th edition

Ltd, E. S. (0 C.E.). Stanford's half-inch map of the battle front between the Somme and Soissons. [Maps]. https://collections.library.yale.edu/catalog/15237951.