Satryani, S., Mardiana, N. ., & 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), 129–138. https://doi.org/10.54543/kesans.v2i3.124