„The Aqueous Calyx Extract of Hibiscus sabdariffa Lowers Blood Pressure and Heart Rate via Sympathetic Nervous System Dependent Mechanisms”, NJPS, vol. 29, nr. 2, pp. 131–136, mai 2021, Data accesării: 8 iulie 2026. [Online]. Disponibil la: https://www.ojshostng.com/index.php/njphysiologicalsciences/article/view/1820