Alston, J. M., Andersen, M. A., James, J. S., & Pardey, P. G. (2010). Persistence Pays: U.S. Agricultural Productivity Growth and the Benefits from Public R&D Spending. Springer New York. https://doi.org/10.1007/978-1-4419-0658-8

Alston, Julian M., Matthew A. Andersen, Jennifer S. James, and Philip G. Pardey. Persistence Pays: U.S. Agricultural Productivity Growth and the Benefits from Public R&D Spending. New York, NY: Springer New York, 2010. https://doi.org/10.1007/978-1-4419-0658-8.

Alston, Julian M., et al. Persistence Pays: U.S. Agricultural Productivity Growth and the Benefits from Public R&D Spending. Springer New York, 2010. https://doi.org/10.1007/978-1-4419-0658-8.