Batubara, J. ., J. . Marbun, A. . Panggabean, E. . Simangunsong, and R. A. . Sembiring. “Box Musik Terapi (BMT) for Hypertensive Patient in Methodist Hospital Medan: Used MPX5050dp and GSR”. Journal of Coastal Life Medicine, vol. 11, no. 1, Mar. 2023, pp. 858-61, https://www.jclmm.com/index.php/journal/article/view/439.