Triyono, J., D. Apriyanto, E. Elyta, T. G. Siringo, and R. Z. Lutfie. “COVID-19 Vaccination Services in the Region Kubu Raya District Border”. International Journal of Multidisciplinary Approach Research and Science, vol. 1, no. 03, Sept. 2023, pp. 549-65, doi:10.59653/ijmars.v1i03.291.