Cite

Merkatorskai︠a︡ karta [cartographic material] : Rossiĭsko-Amerikanskoĭ Kompanii.

MLA

Merkatorskai︠a︡ Karta [Cartographic Material] : Rossiĭsko-Amerikanskoĭ Kompanii. [publisher not identified], 1860. https://collections.library.yale.edu/catalog/15235158.

APA, 6th edition

Merkatorskai︠a︡ karta [cartographic material] : Rossiĭsko-Amerikanskoĭ Kompanii. (1860). [Maps]. [publisher not identified], https://collections.library.yale.edu/catalog/15235158.