Prasanwon, K., A. Patoomwan, and R. Pookboonmee. “Nurses’Knowledge, Attitude, and Nursing Practices for Pain Management for Postoperative Children”. Ramathibodi Nursing Journal, vol. 24, no. 1, July 2018, pp. 37-50, https://he02.tci-thaijo.org/index.php/RNJ/article/view/104614.