Tai และ Ha Huy. (1994) Study on knowledge, perception and self-care practice regarding primary eye care of out-patients in Siriraj and Nakhon Pathom hospital, Thailand. Mahidol University,:ม.ป.ท.Tai และ Ha Huy. 1994. Study on knowledge, perception and self-care practice regarding primary eye care of out-patients in Siriraj and Nakhon Pathom hospital, Thailand. ม.ป.ท.:Mahidol University,;Tai และ Ha Huy. Study on knowledge, perception and self-care practice regarding primary eye care of out-patients in Siriraj and Nakhon Pathom hospital, Thailand. ม.ป.ท.:Mahidol University, 1994. Print.