“The role of the auditor in allocating common costs in the gas industry and its reflection on the company’s performance: Applied Research in North Gas Company”, JAFS, vol. 16, no. 55, pp. 49–65, May 2021, Accessed: May 01, 2025. [Online]. Available: https://www.jpgiafs.uobaghdad.edu.iq/index.php/JAFS/article/view/970