Sulistyowati, Endah, and Danny Wibowo. “Consumer Complaint Behavior (CCB) of Jombang Health Card (KJS) for Increasing Health Facility Service”. Journal of Economics, Business, and Accountancy Ventura, vol. 18, no. 1, June 2015, pp. 121-32, https://doi.org/10.14414/jebav.v18i1.388.