Smith, S., Diers, B., Specht, J., & Carver, B. (2014). Yield gains in major U.S. field crops. Volume 33. Madison, Wisconsin: American Society of Agronomy ; Crop Science Society of America ; Soil Science Society of America.
Chicago Style CitationSmith, Stephen,, Brian Diers, James Specht, and Brett Carver. Yield Gains in Major U.S. Field Crops. Volume 33. Madison, Wisconsin: American Society of Agronomy ; Crop Science Society of America ; Soil Science Society of America, 2014.
MLA CitationSmith, Stephen,, Brian Diers, James Specht, and Brett Carver. Yield Gains in Major U.S. Field Crops. Volume 33. Madison, Wisconsin: American Society of Agronomy ; Crop Science Society of America ; Soil Science Society of America, 2014.
Warning: These citations may not always be 100% accurate.