Numpha, Narumon, Pornthip Malathum, Nuchanad Sutti, and Taweevat Assavapokee. 2022. “Sleep Patterns and Sleep Problems in Older Persons With Dementia and Management by Caregivers”. Nursing Research and Innovation Journal 28 (2). https://he02.tci-thaijo.org/index.php/RNJ/article/view/251139.