Hongchayangkool, K., W. Fongkaew, J. Yenbut, and C. Schroeder. “Encountered Changes : Voices of Young Teenagers During the Transition from Primary to Secondary School”. Pacific Rim International Journal of Nursing Research, vol. 13, no. 1, Feb. 2013, pp. 68-79, https://he02.tci-thaijo.org/index.php/PRIJNR/article/view/6388.