Sidabutar SS, Waruwu CJ. Metode Ceramah dan Media Leaflet terhadap Pengetahuan Ibu dalam Pencegahan ISPA. woh [Internet]. 2022Oct.27 [cited 2024Oct.5];5(4):706-12. Available from: http://103.133.36.92/index.php/woh/article/view/16