Gaya APA
      Das, G. et al (2009).
    Synthesis, characterization and catalytic activity of cobalt phthalocyanine tetrasulphonamide in sweetening of LPG .
    London:
  Elsevier B.V..
  
Gaya MLA
      Das, Gautam. et al.
    "Synthesis, characterization and catalytic activity of cobalt phthalocyanine tetrasulphonamide in sweetening of LPG".
    
    London:
  Elsevier B.V.,
  2009.
  e-journal.