Robert R. Michaels-Johnson, and John R. Slate. “Differences in Student Participation and Performance in Advanced Coursework As a Function of Economic Status”. Global Journal of Human-Social Science 17, no. C4 (July 15, 2017): 9–15. Accessed May 5, 2024. https://socialscienceresearch.org/index.php/GJHSS/article/view/2408.