Mejía Méndez, Guillermo, and José Alfredo Castellanos Suárez. 2018. “Cost of Production and Profitability of Potato Cultivation in Zacapoaxtla, Puebla”. Revista Mexicana De Ciencias Agrícolas 9 (8). México, ME:1651-61. https://doi.org/10.29312/remexca.v9i8.1721.