Ferdiyansyah, A. R., and R. Safarida. “FAKTOR RISIKO TERPAPAR COVID-19 PADA PENDUDUK USIA PRODUKTIF: RISK FACTORS OF COVID-19 INFECTION IN PRODUCTIVE AGE POPULATION”. Quality : Jurnal Kesehatan, vol. 16, no. 1, Dec. 2022, pp. 31-38, https://ejournal.poltekkesjakarta1.ac.id/index.php/adm/article/view/444.