„The Aqueous Calyx Extract of Hibiscus sabdariffa Lowers Blood Pressure and Heart Rate via Sympathetic Nervous System Dependent Mechanisms“, NJPS, Bd. 29, Nr. 2, S. 131–136, Mai 2021, Zugegriffen: 21. Mai 2026. [Online]. Verfügbar unter: https://www.ojshostng.com/index.php/njphysiologicalsciences/article/view/1820