«The Aqueous Calyx Extract of Hibiscus Sabdariffa Lowers Blood Pressure and Heart Rate via Sympathetic Nervous System Dependent Mechanisms». Nigerian Journal of Physiological Sciences 29, no. 2 (Травень 20, 2021): 131–136. дата звернення Липень 8, 2026. https://www.ojshostng.com/index.php/njphysiologicalsciences/article/view/1820.