APA Style

Susanna, D. et al (2011). The level of Escherichia coli contamination in foods and drinks sold at canteens campus canteens . Jakarta: Universitas Indonesia.

MLA Style

Susanna, Dewi. et al. "The level of Escherichia coli contamination in foods and drinks sold at canteens campus canteens". Jakarta: Universitas Indonesia, 2011. Text.