Cite

Baltic Provinces [cartographic material] : ethnographical map.

MLA

Baltic Provinces [Cartographic Material] : Ethnographical Map. Geographical Section, Peace Congress, 0AD. https://collections.library.yale.edu/catalog/15238132.

APA, 6th edition

Baltic Provinces [cartographic material] : ethnographical map. (0 C.E.). [Maps]. Geographical Section, Peace Congress, https://collections.library.yale.edu/catalog/15238132.