Não informado. (1891). Bulletin of the North Dakota Agricultural Experiment Station. North Dakota Agricultural Experiment Station.
Chicagoスタイル(17版)引用形式Não informado. Bulletin of the North Dakota Agricultural Experiment Station. Fargo, ND: North Dakota Agricultural Experiment Station, 1891.
MLA(8版)引用形式Não informado. Bulletin of the North Dakota Agricultural Experiment Station. North Dakota Agricultural Experiment Station, 1891.
警告: この引用は必ずしも正確ではありません.