Satryani, S., Mardiana, N. . and Rahman, G. . (2022) “Effectiveness of UseWhatsapp Groups in Implementation of Classes for Mothers Toddlers Aged 0-1 Years Against Knowledge of Mothers Toddlers in the Technical Implementation Unit, Barong Tongkok Community Health Center in 2022”, KESANS : International Journal of Health and Science, 2(3), pp. 129–138. doi: 10.54543/kesans.v2i3.124.