Koshakri, R., N. Suwonnaroop, K. Phancharoenworakul, C. Tharathep, and N. Chrisman. “Quality of Diabetes Care in PCUs in Central Thailand”. Pacific Rim International Journal of Nursing Research, vol. 13, no. 3, Feb. 2013, pp. 167-80, https://he02.tci-thaijo.org/index.php/PRIJNR/article/view/6462.