Cite

Rocky Mountains between lat. 51° and 53°10 [cartographic material] / Department of the Interior ; R.E. Young, D.L.S., Chief Geographer.

MLA

of the Interior, Canada. Department. Rocky Mountains between Lat. 51° and 53°10 [Cartographic Material] / Department of the Interior ; R.E. Young, D.L.S., Chief Geographer. Department of the Interior, 1910. https://collections.library.yale.edu/catalog/15536045.

APA, 6th edition

of the Interior, C. D. (1910). Rocky Mountains between lat. 51° and 53°10 [cartographic material] / Department of the Interior ; R.E. Young, D.L.S., Chief Geographer. [Maps]. Department of the Interior, https://collections.library.yale.edu/catalog/15536045.