Albuquerque, Ulysses P., Reinaldo F. P. Lucena, Júlio M. Monteiro, Alissandra T. N. Florentino, and Cecília de Fátima C. B. R. Almeida. 2006. “Evaluating Two Quantitative Ethnobotanical Techniques”. Ethnobotany Research and Applications 4 (December):051-060. https://ethnobotanyjournal.org/index.php/era/article/view/101.