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<xml><bibliography><APA>Sawitri Wanpen. (1993) The effect of endurance exercise on scrotal temperature and semen quality in normal healthy men. Mahidol University,:ม.ป.ท.</APA><Chicago>Sawitri Wanpen. 1993. The effect of endurance exercise on scrotal temperature and semen quality in normal healthy men. ม.ป.ท.:Mahidol University,;</Chicago><MLA>Sawitri Wanpen.  The effect of endurance exercise on scrotal temperature and semen quality in normal healthy men.  ม.ป.ท.:Mahidol University, 1993. Print.</MLA></bibliography></xml>
