Cite

Partitions of Poland [cartographic material] : GSGS 2888.

MLA

Section, Great Britain. War Office. General Staff. Geographical. Partitions of Poland [Cartographic Material] : GSGS 2888. GSGS, War Office, 1918. https://collections.library.yale.edu/catalog/15826857.

APA, 6th edition

Section, G. B. W. O. G. S. G. (1918). Partitions of Poland [cartographic material] : GSGS 2888. [Maps]. GSGS, War Office, https://collections.library.yale.edu/catalog/15826857.