U.S. wheat production practices, costs, and yields : variations across regions
MLA
Vocke, Gary, Mir B. Ali and United States. U.S. wheat production practices, costs, and yields : variations across regions. [Washington, D.C.] : United States Department of Agriculture, Economic Research Service, August 2013.
APA
Vocke, G., Ali, M. & United States. (2013). U.S. wheat production practices, costs, and yields : variations across regions. [Washington, D.C.] : United States Department of Agriculture, Economic Research Service.
Chicago
Vocke, Gary, Mir B. Ali and United States. U.S. wheat production practices, costs, and yields : variations across regions. [Washington, D.C.] : United States Department of Agriculture, Economic Research Service, August 2013.