Nury Nusdwinuringtyas, Gunawan Kurniadi, Anita Ratnawati, and Peggy Sunarjo. “Validity and Reliability of the Indonesia Version St. George’s Respiratory Questionnaire”. Indonesian Journal of Physical Medicine and Rehabilitation 8, no. 02 (October 21, 2020): 2-11. Accessed January 12, 2026. https://indojournalpmr.org/IndoJPMR/article/view/244.