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MLA

Smith, Lincoln, et al. "Biological Control of Yellow Starthistle : New Prospects for an Old Problem." ,

APA

Smith, L., Bruckart, W., Widmer, T., Berner, D., Drew, A., United States, U. States, & Department of Agriculture, D. of Agriculture. (2004). Biological control of yellow starthistle : new prospects for an old problem.

Chicago

Smith, Lincoln., William Bruckart, Timothy Widmer, Dana Berner, Allison Drew, United States, and Department of Agriculture. "Biological control of yellow starthistle : new prospects for an old problem" (2004):