M. Werunat, S. Moolsart, and K. Tipkanjanaraykha, “The Effectiveness of a Health Literacy Development Program in Coronavirus 2019 Prevention for Older Adults with Diabetes Mellitus in Phra Nakhon Si Ayutthaya Province”, J Royal Thai Army Nurses, vol. 23, no. 3, pp. 447–456, Jan. 2023.