Brigitte Marazzi, Peter K. Endress, Luciano Paganucci de Queiroz, and Elena Conti (2006). "Phylogenetic relationships within Senna (Leguminosae, Cassiinae) based on three chloroplast DNA regions: patterns in the evolution of floral symmetry and extrafloral nectaries". American Journal of Botany. 93 (2): 288–303. doi:10.3732/ajb.93.2.288.Pemeliharaan CS1: Banyak nama: authors list (link)