Mubarok, M. Ali. “The Role of Grandparents in Enhancing Children’s Spiritual Intelligence: A Unique Case Study in Demak, Central Java, Indonesia”. Jurnal Obsesi : Jurnal Pendidikan Anak Usia Dini, vol. 8, no. 5, Oct. 2024, pp. 1033-47, doi:10.31004/obsesi.v8i5.5964.