Abidin, H., & Rohmah, A. (2020). Analisis Jumlah Pengunjung dan Jumlah Wisata Terhadap PAD Kabupaten Lamongan. UJMC (Unisda Journal of Mathematics and Computer Science), 6(01), 33-38. https://doi.org/https://doi.org/10.52166/ujmc.v6i01.2385