F. A. Mandaty, A. Syaifudin, and S. Sumarno, “The Relationship between Progressive Muscle Relaxation Therapy and Blood Pressure in Elderly People Suffering from Hypertension: Fhandy Aldy Mandaty, Achmad Syaifudin, Sumarno”, J. Persada Husada Indones., vol. 11, no. 42, pp. 9–15, Jul. 2024.