Pingali, P. L. (1989). Institutional and environmental constraints to agricultural intensification. Agricultural Economics Department, International Rice Research Institute.
Cita Chicago (17th ed.)Pingali, Prabhu L. Institutional and Environmental Constraints to Agricultural Intensification. Los Baños, Laguna: Agricultural Economics Department, International Rice Research Institute, 1989.
Cita MLA (9th ed.)Pingali, Prabhu L. Institutional and Environmental Constraints to Agricultural Intensification. Agricultural Economics Department, International Rice Research Institute, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.