Nugraheni, R.M. et al. 2024. Effect of Green Betle Leaf Extract (Piper betle L.) on Indoor Microbiological Quality. Ruwa Jurai: Jurnal Kesehatan Lingkungan. 18, 3 (Dec. 2024), 121–127. DOI:https://doi.org/10.26630/rj.v18i3.4566.