Channak, S., W. Saelee, N. Narongrittikai, P. Jantanee, J. Nakawiroj, P. Wongsawan, and T. Nanthaphongphak. “The effects of the T6 sustained natural apophyseal glide (SNAG) with rotation in mechanical chronic thoracic spine pain: a randomized controlled trial”. Archives of Allied Health Sciences, vol. 28, no. 1, May 2016, pp. 80-91, https://he01.tci-thaijo.org/index.php/ams/article/view/66408.