Spencer, Douglas M.; Theodoridis, Alexander G. (December 2020). "'Appearance of Corruption': Linking Public Opinion and Campaign Finance Reform". Election Law Journal: Rules, Politics, and Policy. 19 (4): 510–523. doi:10.1089/elj.2019.0590.
DeBell, Matthew; Iyengar, Shanto (September 2021). "Campaign Contributions, Independent Expenditures, and the Appearance of Corruption: Public Opinion vs. the Supreme Court's Assumptions". Election Law Journal: Rules, Politics, and Policy. 20 (3): 286–300. doi:10.1089/elj.2019.0610.