Khalil, Layla Jarallah, and Sadeer Hussein Ali. “The Effect of Marketing Flexibility in Enhancing Mental Standing An Exploratory Study of the Asia Cell Company in Diyala Governorate”. Tikrit Journal of Administrative and Economic Sciences, vol. 17, no. 54, 2, June 2021, pp. 428-41, doi:10.25130/tjaes.17.54.2.25.