Nilawarti (2024) “Simple Experimental Methods for Early Childhood Cognitive Development: Metode Eksperimen Sederhana untuk Perkembangan Kognitif Anak Usia Dini”, Indonesian Journal of Education Methods Development, 19(2), p. 10.21070/ijemd.v19i2.951. doi: 10.21070/ijemd.v19i2.951.