Babajide, J., J. Bodunde, and A. Salami. “Quality and Sensory Evaluation of Processed Calyces of Six Varieties of Roselle (<i>Hibiscus Sabdariffa</I> L.)”. Nigerian Journal of Horticultural Science, vol. 9, no. 1, Oct. 2005, pp. 110-5, doi:10.4314/njhs.v9i1.3388.