<?xml version="1.0" encoding="UTF-8"?>
<xml><bibliography><APA>Piyawat Trevittaya. (2016) Concepts of quality of life. &lt;i&gt;Journal of Associated Medical Sciences&lt;/i&gt;, &lt;i&gt;49&lt;/i&gt;(2), 171-184.</APA><Chicago>Piyawat Trevittaya. "Concepts of quality of life". Journal of Associated Medical Sciences  49 (2016):171-184.</Chicago><MLA>Piyawat Trevittaya. Concepts of quality of life. Faculty of Associated Medical Sciences, Chiang Mai University:ม.ป.ท. 2016.</MLA></bibliography></xml>
