Putra, M. Umar Maya, and Syafrida Damanik. “SERVICE IMPLEMENTATION OF CONSUMER INTEREST IN TEBING TINGGI BUSINESS CLINIC SUMATERA UTARA”. International Journal of Research -GRANTHAALAYAH 8, no. 9 (October 1, 2020): 200–208. Accessed May 6, 2024. https://www.granthaalayahpublication.org/journals/granthaalayah/article/view/IJRG20_B09_3735.