Ismawati, Putri, and Ike Ningtias. 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), 49-69. https://doi.org/10.35896/ijecie.v3i1.48.