MLA

of the Interior, Canada. Dept. Alberta and Western Portions of Saskatchewan and Assiniboia / James White, Geographer. Dept. of the Interior, 1903. https://collections.library.yale.edu/catalog/15536042.

APA, 6th edition

of the Interior, C. D. (1903). Alberta and western portions of Saskatchewan and Assiniboia / James White, Geographer. [Maps]. Dept. of the Interior, https://collections.library.yale.edu/catalog/15536042.