Igoni, Suoye, and Itotenaan Henry Ogiri. “Causality of Fiscal Policies and Per Capita Income Development: Evidence from the Nigerian Economy”. Economy 7, no. 1 (May 1, 2020): 19–24. Accessed June 7, 2025. http://asianonlinejournals.com/index.php/Economy/article/view/1562.