purnomo, beny, muhammad wisudawan, oedojo soedirman, and muji sulistyowati. “GAMBARAN UPAYA TINDAKAN PENCEGAHAN COVID-19 3M DI WILAYAH PERCONTOHAN RT SIAGA SURABAYA”. Preventif : Jurnal Kesehatan Masyarakat 13, no. 3 (September 30, 2022). Accessed July 22, 2024. https://jurnal.fkm.untad.ac.id/index.php/preventif/article/view/438.