MLA

of Lands, British Columbia. Dept. Pre-Emptor's Map, Prince Rupert Sheet. Dept. of Lands, 1929. https://collections.library.yale.edu/catalog/15536340.

APA, 6th edition

of Lands, B. C. D. (1929). Pre-emptor's map, Prince Rupert sheet. [Maps]. Dept. of Lands, https://collections.library.yale.edu/catalog/15536340.