MLA

Edinburgh Geographical Institute, John Bartholomew, and Son. Map of Europe Showing Boundaries of States According to Treaties. John Bartholomew & Son, 0AD. https://collections.library.yale.edu/catalog/15258821.

APA, 6th edition

Edinburgh Geographical Institute, J. B., & S. (0 C.E.). Map of Europe showing boundaries of states according to treaties. [Maps]. John Bartholomew & Son, https://collections.library.yale.edu/catalog/15258821.