Rochman, M. F., N. Nurkhayati, and A. Shabrina. “Formulation and Evaluation of Patchouli Oil Bath Bomb With Citric Acid As an Acidic Component”. Jurnal Kefarmasian Indonesia, vol. 15, no. 2, Dec. 2025, pp. 188-96, https://www.jkefarind.com/index.php/jki/article/view/6733.