Sidiq, A. M., and Azizah Nurul Fadlillah. “Puzzle Games in Improving the Cognitive Development of 5-6 Years Old Children”. Jurnal Pendidikan Anak Usia Dini Al-Amin, vol. 1, no. 2, Sept. 2023, pp. 125-32, doi:10.54723/ejpaud.v1i2.88.