Sawitri Wanpen. 1993. The effect of endurance exercise on scrotal temperature and semen quality in normal healthy men. Faculty of Graduate Studies, Mahidol University;
Sawitri Wanpen. (1993) The effect of endurance exercise on scrotal temperature and semen quality in normal healthy men . Mahidol University/Bangkok.
Sawitri Wanpen. The effect of endurance exercise on scrotal temperature and semen quality in normal healthy men. . Bangkok:Mahidol University, 1993.
Sawitri Wanpen. (1993) The effect of endurance exercise on scrotal temperature and semen quality in normal healthy men . Mahidol University/Bangkok.