Gadis Permata Hati Manalu, J. Jumirah, and Indah Anggraini, “The Effect of Video-Based Health Promotion on Clean and Healthy Living Behavior Among Elementary School Students Negeri 050664 Lubuk Dalam, Stabat District, Langkat Regency”, JUK-Medifa, vol. 4, no. 02, pp. 147–157, Aug. 2026.