Heryanto Susilo, Yatim Riyanto, Widya Nusantara, Mustakim Mustakim, and Fina Akmalia Putri. “Intergenerational Informal Learning through Work Values and Community Empowerment Among Waste-Picker Families in Surabaya, Indonesia”. Journal of Nonformal Education 12, no. 2 (August 17, 2026): 302–315. Accessed September 5, 2026. https://journal.unnes.ac.id/journals/jone/article/view/58174.