Jafari, Alireza, Hossein Vazifedoust, and Elaheh Farhadi. 2015. “RECOGNITION AND PRIORITY OF KEY SUCCESS FACTORS (KSF) INCUSTOMERS CLUBS AND CUSTOMERS LOYALTY PROGRAMS”. European Scientific Journal, ESJ 11 (31). https://eujournal.org/index.php/esj/article/view/6627.