Idris, I., D. Z. . Putri, Z. Azhar, J. Martha, and I. Yeni. “Willingness to Participate Analysis of Urban Waste Management in West Sumatra, Indonesia”. Jurnal Perspektif Pembiayaan Dan Pembangunan Daerah, vol. 9, no. 2, June 2021, pp. 115 -26, doi:10.22437/ppd.v9i2.12119.