Cita APA (7a ed.)
Alston, J. M., & Pardey, P. G. (2001). Attribution and other problems in assessing the returns to agricultural R&D. Wiley.
Cita Chicago Style (17a ed.)
Alston, Julian M., y Philip G. Pardey. Attribution and Other Problems in Assessing the Returns to Agricultural R&D. Wiley, 2001.
Cita MLA (9a ed.)
Alston, Julian M., y Philip G. Pardey. Attribution and Other Problems in Assessing the Returns to Agricultural R&D. Wiley, 2001.
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