Patrón Osuna, O.E. and Vargas-Hernández, J.G. 2019. Internal and External Factors to the Company that Provide Productivity Environment in the Private Sector. LIBRE EMPRESA. 16, 1 (Sep. 2019), 64–78. DOI:https://doi.org/10.18041/1657-2815/libreempresa.2019v16n1.5910.