Souza, Mayara Andrade, et al. “Phytosociological Analysis of the Tree-Shrub Component of the Caatinga, Alagoas, Brazil”. Revista Principia, vol. 1, no. 47, Dec. 2019, pp. 153-9, https://doi.org/10.18265/1517-03062015v1n47p153-159.