https://rayhaber.com/2024/07/musteri-sadakati-programlari-ile-guclenen-marka-bagliligi/#google_vignette https://www.gundemgazetesi.net/sadakat-programlari-2028e-kadar-yuzde-10-buyumeyle-80-milyar-dolarlik-bir-pazar-olaca-81444h.htm
