Hidayah, A. ., Nasution, N. H. ., Angraini Simamora, F. ., Masraini Daulay, N. ., & Wari Harahap, Y. . (2023). The Effectiveness of Peer Group Health Education Against Behaviour Change Personal Hygiene for Primary School Students. KnE Social Sciences, 8(4), 755–762. https://doi.org/10.18502/kss.v8i4.12970