Zakria, A. M. “Designing and Validating a Competency Assessment Scale for Head Nurses’ Competences in General Inpatient Units At Main Mansoura University Hospital”. International Journal of Nursing Didactics, vol. 7, no. 7, July 2017, pp. 40-49, doi:10.15520/ijnd.2017.vol7.iss7.235.40-49.