Gazilas, Emmanouil Taxiarchis, Nicholas D. Belesis, and Christos G. Kampouris. “Big Four or Big Fees? Latest Evidence of the Auditing Costs in the United States”. Golden Ratio of Auditing Research 5, no. 2 (May 17, 2025): 13–31. Accessed April 18, 2026. https://www.goldenratio.id/index.php/grar/article/view/1123.