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MLA

Shapovalov, Michael, and F. Sidney Beecher. Experiments on the control of tomato yellows . U.S. Dept. of Agriculture, 1930.

APA

Shapovalov, Michael, and Beecher, F. Sidney. (1930). Experiments on the control of tomato yellows. U.S. Dept. of Agriculture.

Chicago

Shapovalov, Michael, and F. Sidney Beecher. Experiments on the control of tomato yellows . U.S. Dept. of Agriculture, 1930.