W. L. O. R. Bire, D. S. Keba, S. W. Turwewi, and M. N. P. Wadhi, “Formulation and Evaluation of Lip balm Containing Ethanolic Extracts of Moringa oleifera and Muntingia calabura Leaves”, JS, vol. 5, no. 1, pp. 154–161, Apr. 2026.