Hubungan Pengetahuan dan Sikap Ibu dengan Pemberian Imunisasi Measles Rubella di Wilayah Kerja Puskesmas Sinorang : The Relationship between Mother’s Knowledge and Attitudes with Providing Measles Rubella Immunization in the Working Area of the Sinorang Community Health Center. LNJ. 2023;3(2):71-78. doi:10.33860/lnj.v3i2.4265