Pathratipa Sansayavichai. 1995. Thai kaolin : appropriate technological development for pharmaceutical purposes. Bangkok:Mahidol University;
Pathratipa Sansayavichai. (1995) Thai kaolin : appropriate technological development for pharmaceutical purposes (รายงานผลงานวิจัย). Mahidol University:Bangkok.
Pathratipa Sansayavichai. Thai kaolin : appropriate technological development for pharmaceutical purposes. Bangkok:Mahidol University, 1995.
Pathratipa Sansayavichai. (1995) Thai kaolin : appropriate technological development for pharmaceutical purposes (รายงานผลงานวิจัย). Mahidol University:Bangkok.