Kanit Rongsawat. 1995. Reclaiming of used lubricating oil. Bangkok:Chulalongkorn University;
Kanit Rongsawat. (1995) Reclaiming of used lubricating oil (รายงานผลงานวิจัย). Chulalongkorn University:Bangkok.
Kanit Rongsawat. Reclaiming of used lubricating oil. Bangkok:Chulalongkorn University, 1995.
Kanit Rongsawat. (1995) Reclaiming of used lubricating oil (รายงานผลงานวิจัย). Chulalongkorn University:Bangkok.