MCMULLIN, S.; NIEUWENHUIS, M.; JAMNADASS, R. Strategies for Sustainable Supply of and Trade in Threatened Medicinal Tree Species: A case study of genus Warburgia. Ethnobotany Research and Applications, [S. l.], v. 12, p. 671–683, 2014. Disponível em: https://www.ethnobotanyjournal.org/index.php/era/article/view/1000. Acesso em: 25 apr. 2026.