Brumfield, K. (1968). This was wheat farming: A pictorial history of the farms and farmers of the Northwest who grow the Nation's bread ([1st ed.].). Superior Pub. Co.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Brumfield, Kirby. This Was Wheat Farming: A Pictorial History of the Farms and Farmers of the Northwest Who Grow the Nation's Bread. [1st ed.]. Seattle: Superior Pub. Co, 1968.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)Brumfield, Kirby. This Was Wheat Farming: A Pictorial History of the Farms and Farmers of the Northwest Who Grow the Nation's Bread. [1st ed.]. Superior Pub. Co, 1968.
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