Παραπομπή σε μορφή APA (7η εκδ.)

Onakpoya, I., Posadzki, P., & Ernst, E. (2013). Chromium supplementation in overweight and obesity: A systematic review and meta-analysis of randomized clinical trials.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Onakpoya, I., P. Posadzki, και E. Ernst. Chromium Supplementation in Overweight and Obesity: A Systematic Review and Meta-analysis of Randomized Clinical Trials. 2013.

Παραπομπή σε μορφή MLA (9th εκδ.)

Onakpoya, I., et al. Chromium Supplementation in Overweight and Obesity: A Systematic Review and Meta-analysis of Randomized Clinical Trials. 2013.