A. N., H., and A.- qalebi A. A. “Isolation and Diagnosis of Providencia Rettgeri from Different Clinical Cases and Study Antibiotics – Resistant”. Al-Qadisiyah Journal of Pure Science, Vol. 22, no. 3, Mar. 2018, pp. 109 -20, https://journalsc.qu.edu.iq/index.php/JOPS/article/view/672.