“Designing an activity-based ABC costing system for airport landing services: Applied research at Baghdad International Airport”, JAFS, vol. 17, no. 59, pp. 229–242, Jun. 2022, Accessed: Apr. 17, 2025. [Online]. Available: https://jpgiafs.uobaghdad.edu.iq/index.php/JAFS/article/view/1151