Lilianti, Hasmi and Ruru, Y. (2021) “Evaluation of the Covid-19 Surveillance System in Jayapura City, 2020”, International Journal of Sciences: Basic and Applied Research (IJSBAR), 56(2), pp. 190–211. Available at: https://www.gssrr.org/JournalOfBasicAndApplied/article/view/12442 (Accessed: 18 September 2025).