Al-Muhtady, Munther. “The Importance of Using the Barcode Mechanism in Increasing Proficiency Work in Selling Products" An Application Study in the Direct Sale Show in Mosul City university’”. TANMIYAT AL-RAFIDAIN 31, no. 93 (March 1, 2009): 246–277. Accessed September 10, 2025. https://edusj.uomosul.edu.iq/index.php/tanmiyat/article/view/29585.