“Socialization of Waste Sorting and Training on Making Eco Enzyme at the ’Aisyiyah Sidoarjo Orphanage: Sosialisasi Pemilahan Sampah dan Pelatihan Pembuatan Eco Enzyme di Panti Asuhan ‘Aisyiyah Sidoarjo” (2022) Procedia of Social Sciences and Humanities, 3, pp. 1436–1441. doi:10.21070/pssh.v3i.343.