Klopotan, Igor, Kristina Vrhovec-Žohar, and Edita Mahič. “Relationship Between Customers’ Loyalty and Income: Preliminary Research”. ENTRENOVA - ENTerprise REsearch InNOVAtion 1, no. 1 (October 31, 2015): 65–70. Accessed May 15, 2024. https://hrcak.srce.hr/ojs/index.php/entrenova/article/view/14386.