Pasaribu, R., P. Pristiyono, Y. . Prayoga, and M. Siregar. “Utilization Of Coconut Water Post Covid-19 Vaccine For Students Of West Bilah State 5 Junior High School”. International Journal Of Community Service, vol. 2, no. 2, Mar. 2022, pp. 173-7, doi:10.51601/ijcs.v2i2.86.