Umiński, Paweł. “The Importance of the Financial Sector and Its Impact on Economic System in the United States in Years 1970?201”. Equilibrium. Quarterly Journal of Economics and Economic Policy 6, no. 3 (September 30, 2011): 59–70. Accessed June 15, 2024. https://journals.economic-research.pl/eq/article/view/400.