APA način citiranja

Covolo, L., Capelli, M., Ceretti, E., Feretti, D., Caimi, L., & Gelatti, U. (2013). Nutritional supplements for diabetes sold on the internet: Business or health promotion? BioMed Central.

Čikaški stil citiranja

Covolo, Loredana, Michela Capelli, Elisabetta Ceretti, Donatella Feretti, Luigi Caimi, i Umberto Gelatti. Nutritional Supplements for Diabetes Sold On the Internet: Business or Health Promotion? BioMed Central, 2013.

MLA način citiranja

Covolo, Loredana, et al. Nutritional Supplements for Diabetes Sold On the Internet: Business or Health Promotion? BioMed Central, 2013.