Sugiarto, A. ., & Kustiah Ramadania, R. . (2023). Economic and Spatial Regional Integration and Its Impacts on Regional Development in North Tapanuli Regency. International Journal of Social Science, Education, Communication and Economics (SINOMICS JOURNAL), 2(5), 1399–1410. https://doi.org/10.54443/sj.v2i5.233