Damanik, Elsarika, et al. “The Relationship of Yoga Modified Melayu Deli Music With Anxiety in Pregnant Women at the Clinic Pratama Doa Ibu”. Science Midwifery, vol. 11, no. 2, June 2023, pp. 345-57, doi:10.35335/midwifery.v11i2.1277.