“Analysis the Effect of Household Consumption Expenditure, Investment and Labor to Economic Growth: A Case in Province of North Sumatra” (2018) Studia Universitatis Vasile Goldiș Arad, Seria Științe Economice, 28(4), pp. 45–54. Available at: https://publicatii.uvvg.ro/index.php/studiaeconomia/article/view/398 (Accessed: 11 April 2026).