Medina-Herrera, L.M., Miranda-Valenzuela, J.C., Vázquez-Villegas, P., Escalante-Vázquez, E.J., Mejía-Manzano, L.A. and Membrillo-Hernández, J. 2024. Evaluation of the Efficiency of the Sudden Implementation of the Synchronous Online Course: Findings of a Mixed Method Study. Journal on Efficiency and Responsibility in Education and Science. 17, 2 (Jun. 2024), 118–129. DOI:https://doi.org/10.7160/eriesj.2024.170202.