Soedjatmiko, Soedjatmiko, Hartono Gunardi, Rini Sekartini, Bernie Endyarni Medise, Ikhsan Johnson, Yulianti Wibowo, and Ray Basrowi. “Maternal Attitude and Child Interest in Various Play Activities before and After Mother-Child Play Sessions”. Paediatrica Indonesiana 57, no. 6 (January 5, 2018): 316-22. Accessed July 13, 2020. https://paediatricaindonesiana.org/index.php/paediatrica-indonesiana/article/view/1644.