Ismawati, P. and Ningtias, I. (2019) “Pengaruh APE Montessori Manich Math terhadap Kemampuan Berhitung Kelompok A Di RA Brudu Sumobito Jombang”, Al Hikmah Indonesian Journal of Early Childhood Islamic Education, 3(1), pp. 49-69. doi: 10.35896/ijecie.v3i1.48.