Loo, P., P. Gultom, and M. Luckyanto. “Strategies To Increase Customer Satisfaction Through Relationship Marketing And Discounts At Penyet Kalasan Chicken Restaurant”. JURNAL LENTERA : Kajian Keagamaan, Keilmuan Dan Teknologi, Vol. 24, no. 3, Oct. 2025, pp. 898-06, https://ejournal.staimnglawak.ac.id/index.php/lentera/article/view/1771.