„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 (Мај 20, 2021): 131–136. приступљено Април 25, 2026. https://ojshostng.com/index.php/njphysiologicalsciences/article/view/1820.