Cite

Home Headquarters Map : German and Polish Frontiers.

MLA

Home Headquarters Map : German and Polish Frontiers. Hobian Map Co., 0AD. https://collections.library.yale.edu/catalog/15479704.

APA, 6th edition

Home Headquarters Map : German and Polish Frontiers. (0 C.E.). [Maps]. Hobian Map Co., https://collections.library.yale.edu/catalog/15479704.