Riina, Ricarda, and Paul E. Berry. “Two New South American Species of Croton (Euphorbiaceae) and Their Phylogenetic Affinities”. Anales del Jardín Botánico de Madrid 67, no. 1 (June 30, 2010): 23–27. Accessed February 24, 2025. https://rjb.revistas.csic.es/index.php/rjb/article/view/339.