Стиль цитування APA (7-ме видання)

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.

Чикаго стиль цитування (17-те видання)

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

Стиль цитування MLA (9-ме видання)

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.