(en) E. Berry Paul, L. Hipp Andrew, J. Wurdack Kenneth, Benjamin Van Ee et Ricarda Riina, «Molecular phylogenetics of the giant genus Croton and tribe Crotoneae (Euphorbiaceae sensu stricto) using ITS and TRNL‐TRNF DNA sequence data», American Journal of Botany, vol.92, no9, , p.1520-1534 (DOI10.3732/ajb.92.9.1520).