Hassan, Alaa Ahmed, and Mohammed J. Mohammed. “The Impact of Perceived Organizational Support in Promoting Informal Learning in the Workplace: Survey Study in the Department and Divisions of Quality in the Presidency and Collages of the University of Mosul”. Tikrit Journal of Administrative and Economic Sciences, vol. 17, no. 54, 2, June 2021, pp. 389-12, doi:10.25130/tjaes.17.54.2.23.