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MLA

Unger, Paul W, and Southwestern Great Plains Research Center (U.S.). "Sunflower Research In the Southern High Plains : a Progress Report." ,

APA

Unger, P. W, & Southwestern Great Plains Research Center (U.S.), S. Great Plains Research Center (U.S.). (0000). Sunflower research in the southern High Plains : a progress report.

Chicago

Unger, Paul W., and Southwestern Great Plains Research Center (U.S.). "Sunflower research in the southern High Plains : a progress report" (1976):