Angella P.Tangkulung, Theo W.E. Mautang, Deviana P.Munthe, Prycilia P.Mamuaja, Augustinus Butarbutar, and Jilly Toar. 2026. “Perception and Level of Knowledge About Menarche in Student of SMP Negeri 2 Tomohon”. International Journal of Health Engineering and Technology 4 (5). https://doi.org/10.55227/ijhet.v4i5.505.