Sipayung, A.T.T. et al. 2026. Association of PSN implementation frequency with mosquito larvae presence in Kwala Bekala, Medan. Buletin Kedokteran & Kesehatan Prima. 5, 2 (Sep. 2026), 231–235. DOI:https://doi.org/10.34012/bkkp.v5i2.8755.