Amgad S. D. Khaled, Dr.Avinash Sharma, Fatehi Ali Mohammed Almugari, Dr. Salma Ahmed. “REBUILDING E-TAILERS’ SERVICES: A STUDY ON DEFEND PURCHASE at Retail Store ”. International Journal of Advanced Science and Technology, Vol. 29, no. 12s, June 2020, pp. 1664-7, http://sersc.org/journals/index.php/IJAST/article/view/23904.