Gaya APA

Garg, S. et al (2009). Acidity and catalytic activities of sulfated zirconia inside SBA-15 . London: Elsevier B.V..

Gaya MLA

Garg, Shelu. et al. "Acidity and catalytic activities of sulfated zirconia inside SBA-15". London: Elsevier B.V., 2009. e-journal.