Hermawati, B., S. Indarjo, F. A. Mukti, H. A. Ramadhanty, and F. D. Rahayu. “Early Childhood Health-Protective Behavior Against Environmental Tobacco Smoke Exposure in Households”. Unnes Journal of Public Health, Vol. 10, no. 1, Jan. 2021, pp. 94-99, doi:10.15294/ujph.v10i1.38357.