HARPER, J. The Not-So Rosy Periwinkle: Political Dimensions of Medicinal Plant Research. Ethnobotany Research and Applications, [S. l.], v. 3, p. 295–308, 2005. Disponível em: https://ethnobotanyjournal.org/index.php/era/article/view/81. Acesso em: 19 oct. 2021.