Cite

Sweden and Finland (South) : special strategic map.

MLA

Service, United States. Army Map. Sweden and Finland (South) : Special Strategic Map. The Service, 0AD. https://collections.library.yale.edu/catalog/15471552.

APA, 6th edition

Service, U. S. A. M. (0 C.E.). Sweden and Finland (South) : special strategic map. [Maps]. The Service, https://collections.library.yale.edu/catalog/15471552.