APA (7th ed.) Citation

Balkwill, H. R., & Yorath, C. J. (1971). Brock River map-area, District of Mackenzie (97D). Information Canada.

Chicago Style (17th ed.) Citation

Balkwill, H. R., and C. J. Yorath. Brock River Map-area, District of Mackenzie (97D). Ottawa: Information Canada, 1971.

MLA (9th ed.) Citation

Balkwill, H. R., and C. J. Yorath. Brock River Map-area, District of Mackenzie (97D). Information Canada, 1971.