Kurnianto, Duwi. “MENJAGA KESEHATAN DI USIA LANJUT”. Jorpres (Jurnal Olahraga Prestasi) 11, no. 2 (October 12, 2015). Accessed June 23, 2025. https://journal.uny.ac.id/index.php/jorpres/article/view/5725.