Sakinah, I. The Effect of E-Leaflet Education on Red Onion Administration to Improve Mothers’ Knowledge About Reducing Fever After DPT Immunization: PENGARUH EDUKASI E-LEAFLET PEMBERIAN BAWANG MERAH TERHADAP PENINGKATAN PENGETAHUAN IBU TENTANG PENURUNAN DEMAM PASCA IMUNISASI DPT. PHJ 2025, 7, 428-435.