Anggini, Kiki. “HUBUNGAN LATIHAN RELAKSASI OTOT PROGRESIF DENGAN KUALITAS TIDUR PADA LANSIA”. Jurnal Ilmiah PANNMED (Pharmacist, Analyst, Nurse, Nutrition, Midwivery, Environment, Dentist) 15, no. 2 (August 10, 2020): 289–295. Accessed August 27, 2025. https://ojs.poltekkes-medan.ac.id/pannmed/article/view/753.