Παραπομπή σε μορφή APA (7η εκδ.)

Onakpoya, I., Terry, R., & Ernst, E. (2011). The use of green coffee extract as a weight loss supplement: A systematic review and meta-analysis of randomised clinical trials.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Onakpoya, I., R. Terry, και E. Ernst. The Use of Green Coffee Extract as a Weight Loss Supplement: A Systematic Review and Meta-analysis of Randomised Clinical Trials. 2011.

Παραπομπή σε μορφή MLA (9th εκδ.)

Onakpoya, I., et al. The Use of Green Coffee Extract as a Weight Loss Supplement: A Systematic Review and Meta-analysis of Randomised Clinical Trials. 2011.