Mohammed, Najlaa Qassim, and Ahmed Ali Hussin. “Measuring the Availability of Some Requirements of the International Standard (ISO21001:2018) A Survey of the Teaching Staff in Several Faculties of Kirkuk University”. Tikrit Journal of Administrative and Economic Sciences 17, no. 56, 3 (December 31, 2021): 126–145. Accessed October 25, 2026. https://www.tjaes.org/index.php/tjaes/article/view/1503.