Yingyos Suntithananon. (1995) Helmet and Maxillo faclal Injury in Vajira Hospital. <i>Journal of Medicine and Health Sciences</i>, <i>2</i>(2), 78-81.Yingyos Suntithananon. "Helmet and Maxillo faclal Injury in Vajira Hospital". Journal of Medicine and Health Sciences 2 (1995):78-81.Yingyos Suntithananon. Helmet and Maxillo faclal Injury in Vajira Hospital. Faculty of Medicine,Srinakharinwirot University:ม.ป.ท. 1995.