Hartono, Arif, and Yeni Alvionita. 2021. “Analysis of Local Tax Efforts in Supporting Increasing Ponorogo Regency’s Original Local Government Revenue”. Ekuilibrium : Jurnal Ilmiah Bidang Ilmu Ekonomi 16 (2):164-75. https://doi.org/10.24269/ekuilibrium.v16i2.2021.pp164-175.