Apiratwarakul, K., R. Artpru, K. Ienghong, W. Rattanaseeha, T. Piwhom, and P. Phungoen. “The Study of Driving Behavior When Encounter the Light and Siren on Ambulance”. Srinagarind Medical Journal, vol. 33, no. 5, Aug. 2018, pp. 404-7, https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/141408.