APA Edition Citation

Evenson, R. E., & Gollin, D. Crop variety improvement and its effect on productivity: The impact of international agricultural research.

Chicago Edition Citation

Evenson, Robert E., and Douglas Gollin. Crop Variety Improvement and Its Effect on Productivity: The Impact of International Agricultural Research.

MLA Edition Citation

Evenson, Robert E., and Douglas Gollin. Crop Variety Improvement and Its Effect on Productivity: The Impact of International Agricultural Research.

Warning: These citations may not always be 100% accurate.