“Phytochemical Analysis, Total Phenolic Content and Antioxidant Activity of Two Varieties of Hibiscus Sabdariffa L. Leaves”. Journal of Tropical Resources and Sustainable Science (JTRSS) , vol. 11, no. 2, Dec. 2023, pp. 41-48, https://doi.org/10.47253/jtrss.v11i2.1241.