توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Onakpoya, I., Hung, S., Perry, R., Wider, B., & Ernst, E. (2011). The Use of Garcinia Extract (Hydroxycitric Acid) as a Weight loss Supplement: A Systematic Review and Meta-Analysis of Randomised Clinical Trials. Hindawi Publishing Corporation.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Onakpoya, I., S. Hung, R. Perry, B. Wider, و E. Ernst. The Use of Garcinia Extract (Hydroxycitric Acid) as a Weight Loss Supplement: A Systematic Review and Meta-Analysis of Randomised Clinical Trials. Hindawi Publishing Corporation, 2011.

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

Onakpoya, I., et al. The Use of Garcinia Extract (Hydroxycitric Acid) as a Weight Loss Supplement: A Systematic Review and Meta-Analysis of Randomised Clinical Trials. Hindawi Publishing Corporation, 2011.