Jirdsak Tscheikuna. 1994. Influence of nitrogen compounds on hydrogenation of Benzene. Bangkok:Chulalongkorn University;
Jirdsak Tscheikuna. (1994) Influence of nitrogen compounds on hydrogenation of Benzene (รายงานผลงานวิจัย). Chulalongkorn University:Bangkok.
Jirdsak Tscheikuna. Influence of nitrogen compounds on hydrogenation of Benzene. Bangkok:Chulalongkorn University, 1994.
Jirdsak Tscheikuna. (1994) Influence of nitrogen compounds on hydrogenation of Benzene (รายงานผลงานวิจัย). Chulalongkorn University:Bangkok.