หลงผาสุข ณ., มั่นคง ส., and ศิรโพธิ์งาม ย., “Health Conditions and Self-Care Activities of Older Caregivers Caring for Bedridden Older Adults”, J Thai Nurse midwife Counc, vol. 33, no. 2, pp. 97–109, Aug. 2018.