Cite

Map of the Balkan States showing frontiers in accordance with the treaties and agreements of 1913-14 [cartographic material].

MLA

Royal Geographical Society (Great Britain). Map of the Balkan States showing frontiers in accordance with the treaties and agreements of 1913-14 [cartographic material].. BRBL_00256. 1914. https://collections.library.yale.edu/catalog/15498756.

APA, 6th edition

Royal Geographical Society (Great Britain). (["BRBL_00256"])(1914)[Map of the Balkan States showing frontiers in accordance with the treaties and agreements of 1913-14 [cartographic material].]. https://collections.library.yale.edu/catalog/15498756.