Zhao, C., Castelan-Ortega, O., Faweett, R., Arriaga Jordan, C., & Herrero, M. (2000). Progreá of agricultural information technology: Integrating simulation models to support decision making by campesino maize-cattle farmers of the Toluca Valley in Central Mexico. Beijing (China): International Academic Publishers.

Zhao, Ch., O.A Castelan-Ortega, R.H Faweett, C. Arriaga Jordan, and M. Herrero. Progreá of Agricultural Information Technology: Integrating Simulation Models to Support Decision Making By Campesino Maize-cattle Farmers of the Toluca Valley in Central Mexico. Beijing (China): International Academic Publishers, 2000.

Zhao, Ch., et al. Progreá of Agricultural Information Technology: Integrating Simulation Models to Support Decision Making By Campesino Maize-cattle Farmers of the Toluca Valley in Central Mexico. Beijing (China): International Academic Publishers, 2000.