Cite

Topographical map of part of the Selkirk Range, British Columbia, adjacent to the Canadian Pacific Railway [map] / from photographic surveys by Arthur O. Wheeler.

MLA

Branch, Canada. Topographical Surveys. Topographical Map of Part of the Selkirk Range, British Columbia, Adjacent to the Canadian Pacific Railway [Map] / from Photographic Surveys by Arthur O. Wheeler. Canada. Dept. of the Interior, 1906. https://collections.library.yale.edu/catalog/15536319.

APA, 6th edition

Branch, C. T. S. (1906). Topographical map of part of the Selkirk Range, British Columbia, adjacent to the Canadian Pacific Railway [map] / from photographic surveys by Arthur O. Wheeler. [Maps]. Canada. Dept. of the Interior, https://collections.library.yale.edu/catalog/15536319.