Munawaroh, Z. A. “Pengaruh Pemberian Reward Stiker Bintang Terhadap Percaya Diri Anak Kelompok B Di TK Thoriqussalam Sidoarjo”. JECED : Journal of Early Childhood Education and Development, vol. 1, no. 1, Dec. 2019, pp. 21-29, doi:10.15642/jeced.v1i1.494.