Moyo, M., M. Kulkarni, J. Finnie, and J. Van Staden. “GERMINATION OF SCLEROCARYA BIRREA SEEDS: A TREE OF MEDICINAL IMPORTANCE”. African Journal of Traditional, Complementary and Alternative Medicines, vol. 6, Apr. 2009, pp. 344-5, https://journals.athmsi.org/index.php/ajtcam/article/view/691.