Prapin Bawornwichitkul. 1995. The risk of hospital employee exposed to ethylene oxide. Bangkok:Mahidol University;
Prapin Bawornwichitkul. (1995) The risk of hospital employee exposed to ethylene oxide (รายงานผลงานวิจัย). Mahidol University:Bangkok.
Prapin Bawornwichitkul. The risk of hospital employee exposed to ethylene oxide. Bangkok:Mahidol University, 1995.
Prapin Bawornwichitkul. (1995) The risk of hospital employee exposed to ethylene oxide (รายงานผลงานวิจัย). Mahidol University:Bangkok.