Agüero, M., Segura, C. and Parra, J. (2014) “Comparison of total phenolic compounds and antioxidant activity of four brands of infusions of Hibiscus sabdariffa (Malvaceae) marketed in Costa Rica”, Uniciencia, 28(1), pp. 34–42. Available at: https://www.revistas.una.ac.cr/index.php/uniciencia/article/view/5591 (Accessed: 24 April 2026).