Kunhadi, Dedy, Badriyah Badriyah, and Yayah Atmajawati. 2018. “Improving Skills to Manage Household Waste in Wonokromo Urban Village, Surabaya”. Kontribusia : Research Dissemination for Community Development 1 (1):43-46. https://doi.org/10.30587/kontribusia.v1i1.256.