Guerra-Centeno, D., Burmester-Ruiz, L., Guerra-Burmester, P., Guerra-Burmester, D., & Villatoro-Paz, F. (2020). Voluntary and mandatory use of face mask by pedestrians in Guatemala City during the COVID-19 pandemic. Universidad de San Carlos de Guatemala.

Guerra-Centeno, Dennis, Luisa Burmester-Ruiz, Paula Guerra-Burmester, Dennis Guerra-Burmester, and Federico Villatoro-Paz. Voluntary and Mandatory Use of Face Mask By Pedestrians in Guatemala City During the COVID-19 Pandemic. Universidad de San Carlos de Guatemala, 2020.

Guerra-Centeno, Dennis, et al. Voluntary and Mandatory Use of Face Mask By Pedestrians in Guatemala City During the COVID-19 Pandemic. Universidad de San Carlos de Guatemala, 2020.