Cite

Map of a portion of the southern Interior of British Columbia : embodying the explorations made in 1877 by G.M. Dawson, and in 1882-4 by Amos Bowman / drawn by Israel Marion.

MLA

Marion, Israel. Map of a Portion of the Southern Interior of British Columbia : Embodying the Explorations Made in 1877 by G.M. Dawson, and in 1882-4 by Amos Bowman / Drawn by Israel Marion. Geological and Natural History Survey of Canada, 1888. https://collections.library.yale.edu/catalog/15536282.

APA, 6th edition

Marion, I. (1888). Map of a portion of the southern Interior of British Columbia : embodying the explorations made in 1877 by G.M. Dawson, and in 1882-4 by Amos Bowman / drawn by Israel Marion. [Maps]. Geological and Natural History Survey of Canada, https://collections.library.yale.edu/catalog/15536282.