Al-Zaydiyn, A. and Al-Jaafrah, A.A.-S. (2016) “Teaching Competency among Teachers of the ElementaryStage from the Perspective of Elementary School Principalsand Supervisors in the South of Jordan According to theCriteria of Total Quality”, Al-Balqa Journal for Research and Studies, 19(1), pp. 117–141. doi:10.35875/1105-019-001-006.