Schrire, B.D. (2008). "The Madagascan genus Vaughania is reduced to synonymy under Indigofera (Leguminosae–Papilionoideae–Indigofereae)". Kew Bulletin. 63 (3): 477–479. doi:10.1007/s12225-008-9061-7. JSTOR20649585. S2CID43308210.
Gao, X.; Schrire, B.D. "Indigofera L."Flora of China. eFloras (Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA). Dicapai pada 13 April 2023.
Schrire, B.D. (2008). "The Madagascan genus Vaughania is reduced to synonymy under Indigofera (Leguminosae–Papilionoideae–Indigofereae)". Kew Bulletin. 63 (3): 477–479. doi:10.1007/s12225-008-9061-7. JSTOR20649585. S2CID43308210.
Schrire, B.D. (2008). "The Madagascan genus Vaughania is reduced to synonymy under Indigofera (Leguminosae–Papilionoideae–Indigofereae)". Kew Bulletin. 63 (3): 477–479. doi:10.1007/s12225-008-9061-7. JSTOR20649585. S2CID43308210.