Gaya APA

Chang, P. et al (2009). Sorptive removal of tetracycline from water by palygorskite . London: Elsevier B.V..

Gaya MLA

Chang, Po-Hsiang. et al. "Sorptive removal of tetracycline from water by palygorskite". London: Elsevier B.V., 2009. e-journal.