Cite

Sketch map of the Russian Empire.

MLA

Sketch Map of the Russian Empire. General Drafting Co., Inc., 0AD. https://collections.library.yale.edu/catalog/15238120.

APA, 6th edition

Sketch map of the Russian Empire. (0 C.E.). [Maps]. General Drafting Co., Inc., https://collections.library.yale.edu/catalog/15238120.