Poncumhak, P., P. Wattanapun, J. Sangsuwan, and S. Amatachaya. “Validity of the Sit-to-Stand Test for the Requirement of Walking Devices in Patients With Spinal Cord Injury”. Archives of Allied Health Sciences, vol. 24, no. 3, Dec. 2012, pp. 339-47, https://he01.tci-thaijo.org/index.php/ams/article/view/66295.