«The Aqueous Calyx Extract of Hibiscus sabdariffa Lowers Blood Pressure and Heart Rate via Sympathetic Nervous System Dependent Mechanisms», NJPS, vol. 29, núm. 2, p. 131–136, maig 2021, Consulta: 6 abril 2026. [En línia]. Disponible a: https://www.ojshostng.com/index.php/njphysiologicalsciences/article/view/1820