http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Study of Exposure to Sulphur Containing Compound Among Workers in a Sulphuric Acid Production Plant
M.Eng. (SHE) Jabatan Kejuruteraan Kimia, Fakulti Kejuruteraan, Universiti Malaya 2013.