Piyanad Promchutima. 1995. Purification of delta-aminolevulinate dehydrase from human erythrocytes. Bangkok:Mahidol University;
Piyanad Promchutima. (1995) Purification of delta-aminolevulinate dehydrase from human erythrocytes (รายงานผลงานวิจัย). Mahidol University:Bangkok.
Piyanad Promchutima. Purification of delta-aminolevulinate dehydrase from human erythrocytes. Bangkok:Mahidol University, 1995.
Piyanad Promchutima. (1995) Purification of delta-aminolevulinate dehydrase from human erythrocytes (รายงานผลงานวิจัย). Mahidol University:Bangkok.