Volume 21, Number 84 (October-December) 2019

VÉRTICE UNIVERSITARIO Volume 21, Number 84 (October-December) 2019, is a quarterly publication edited by the University of Sonora, through the Division of Economic and Administrative Sciences. Blvd. Luis Encinas y Rosales s/n, Campus Hermosillo, Building 10J, Ground Floor, Col. Centro, Hermosillo, Sonora, Mexico. Tel. (662) 259-21-66, www.revistavertice.uson.mx; vertice@unison.mx. Responsible Editor: PhD. Joel Enrique Espejel Blanco. Reservation of Rights to Exclusive Use 04-2019-090613561000-203, granted by the National Copyright Institute. ISSN: in process. Responsible for the last update of this issue: PhD. Joel Enrique Espejel Blanco. Date of last modification December 19, 2019.