Watcharachai Rujirojkul และผู้แต่งคนอื่นๆ. (2008) Reappraisal of Blood Lead Levels and Relation to Delta-Aminolevulinic Acid Dehydratase, Zinc Protoporphyrin and Urinary ALA Level in Thai Normal Adults and Lead Exposed Workers. <i>EnvironmentAsia</i>, <i>1</i>(1), p1-6.Watcharachai Rujirojkul และผู้แต่งคนอื่นๆ. "Reappraisal of Blood Lead Levels and Relation to Delta-Aminolevulinic Acid Dehydratase, Zinc Protoporphyrin and Urinary ALA Level in Thai Normal Adults and Lead Exposed Workers". EnvironmentAsia 1 (2008):p1-6.Watcharachai Rujirojkul และผู้แต่งคนอื่นๆ. Reappraisal of Blood Lead Levels and Relation to Delta-Aminolevulinic Acid Dehydratase, Zinc Protoporphyrin and Urinary ALA Level in Thai Normal Adults and Lead Exposed Workers. Thai Society of Higher Education Institutes on Environment:ม.ป.ท. 2008.