Budiyanti, Y, et al. “The Influence of Co-Brand Service on Satisfaction That Implicates to General Patient at Green Care Clinic”. Proceeding Interuniversity Forum for Strengthening Academic Competency, vol. 1, no. 1, May 2019, pp. 102-8, https://proceedings.conference.unpas.ac.id/index.php/ifsac/article/view/132.