Mongkol, S., P. Poomsutat, and R. Saunpiayoong. “Reliability and Validity of Adapted Gravitational Goniometer and Hand-Held Inclinometer in Measuring Shoulder Mobility”. Journal of Associated Medical Sciences, vol. 50, no. 3, Sept. 2017, p. 566, https://he01.tci-thaijo.org/index.php/bulletinAMS/article/view/76234.