Siboro, Hotman, Penus Sinurat, Venus Situmeang, Muammar Rinaldi, and Sienny. 2024. “The Level of Gross Domestic Regional Product (GRDP) and Inflation: Analysis of People’s Purchasing Power in North Sumatra for the 2012-2022 Period”. International Journal of Advanced Research 1 (3): 82-90. https://journal.outlinepublisher.com/index.php/ijar/article/view/202.