Kristina, Kristina. “THE EFFECT OF MUSIC THERAPY ON REDUCING ANXIETY OF PRE OPERATIONAL PATIENTS IN SRI PAMELA TEBING HIGH Hospital in 2022 ”. Science Midwifery, vol. 10, no. 2, June 2022, pp. 1193-02, https://midwifery.iocspublisher.org/index.php/midwifery/article/view/487.