Pirie, Michael D. 2018. “Cremastosperma (and Other Evolutionary Digressions): Molecular Phylogenetic, Biogeographic, and Taxonomic Studies in Neotropical Annonaceae”. Revista de Biologia Neotropical Journal of Neotropical Biology 2 (2): 149-50. https://teste.revistas.ufg.br/RBN/article/view/8564.