Cite

Geological map of north western Manitoba and portions of the districts of Assiniboia and Saskatchewan [cartographic material] / by J. B. Tyrrell ; assisted by D. B. Dowling.

MLA

Tyrrell, Joseph Burr, 1858-1957. Geological map of north western Manitoba and portions of the districts of Assiniboia and Saskatchewan [cartographic material] / by J. B. Tyrrell ; assisted by D. B. Dowling.. BRBL_00382. 1891. https://collections.library.yale.edu/catalog/15536024.

APA, 6th edition

Tyrrell, Joseph Burr, 1858-1957. (["BRBL_00382"])(1891)[Geological map of north western Manitoba and portions of the districts of Assiniboia and Saskatchewan [cartographic material] / by J. B. Tyrrell ; assisted by D. B. Dowling.]. https://collections.library.yale.edu/catalog/15536024.