Holis, W., and Mery Eka Yaya Fujianti. “Efektivitas Relaksasi Otot Progresif (Progressive Muscle Relaxation) Terhadap Kecemasan: Sistematic Review”. Indonesian Health Science Journal, vol. 4, no. 2, Dec. 2024, pp. 50-57, doi:10.52298/ihsj.v4i2.62.