Pratiwi, Rizky Intan, Lelli Astriani, Dwight Mahaputera Marulitua Hutapea, and Albert Manggading Hutapea. “Effectiveness of Music and Aromatheraphy As an Intervention for Preoperative Anxiety: A Systematic Review”. Abstract Proceedings International Scholars Conference 6, no. 1 (October 29, 2018): 81. Accessed June 14, 2021. https://jurnal.unai.edu/index.php/isc/article/view/1359.