APA (7th ed.) Citation

Grain Research Laboratory & Anderson, J. A. (1939). Map of Western Canada showing the protein content of hard red spring wheat, 1939 crop. Board of Grain Commissioners, Grain Research Laboratory.

Chicago Style (17th ed.) Citation

Grain Research Laboratory and J. Ansel Anderson. Map of Western Canada Showing the Protein Content of Hard Red Spring Wheat, 1939 Crop. [Winnipeg, Man.]: Board of Grain Commissioners, Grain Research Laboratory, 1939.

MLA (8th ed.) Citation

Grain Research Laboratory and J. Ansel Anderson. Map of Western Canada Showing the Protein Content of Hard Red Spring Wheat, 1939 Crop. Board of Grain Commissioners, Grain Research Laboratory, 1939.