Ojokoh, A. O., F. C. Adetuyi, and F. A. Akinyosoye. 2006. “Short Communication Nutrient and Antinutrient Contents of Fermented Roselle Calyx”. Biological Sciences - PJSIR 49 (6):440-42. https://v2.pjsir.org/index.php/biological-sciences/article/view/1300.