ปัญญาธรกาญจนา, and ทรงศรีชลการ. 2020. “Healthcare and Related Factors of the Elderly Living Alone in Bantad, Mueang District, Udonthani Province”. APHEIT Journal of Nursing and Health 2 (2), 41-52. https://rsujournals.rsu.ac.th/index.php/ajnh/article/view/1601.