Cite

Relief map of Canada and the United States.

MLA

of Canada, Geological Survey. Relief Map of Canada and the United States. The Survey, 1900. https://collections.library.yale.edu/catalog/15535376.

APA, 6th edition

of Canada, G. S. (1900). Relief map of Canada and the United States. [Maps]. The Survey, https://collections.library.yale.edu/catalog/15535376.