farihatul Atikah, et al. “The Implementation of Piaget’s and Vygotsky’s Theories in Supporting the Cognitive Development of Children in Raudhatul Athfal (RA) and Kindergarten”. Yinyang: Jurnal Studi Islam Gender Dan Anak, vol. 21, no. 1, May 2026, pp. 54-62, doi:10.24090/yinyang.v21i1.14104.