ไตรถวิล อุบล. 2018. “The Effects of Caregivers Empowerment Program on Performance of Bedridden Elderly Care in Bangban District, Phra Nakhon Si Ayutthaya Province”. Journal of Preventive Medicine Association of Thailand 8 (2):268-80. https://he01.tci-thaijo.org/index.php/JPMAT/article/view/147116.