Fikriyah Arfina Nainggolan, et al. “Effect of Enabling and Reinforcing Factors on mother’s Actions in Prevention of COVID-19 in Pematangsiantar City in 2023”. Journal Healthcare Treatment Development, vol. 3, no. 01, Mar. 2023, pp. 51-56, doi:10.55529/jhtd.32.1.6.