Du Puy et al., 1993. Kew Bulletin, 48 (4): 727-733

Du Puy, D. J. ; Labat, J. N. ; Schrire, B. D., 1993. The separation of two previously confused species in the Indigofera spicata complex (Leguminosae: Papilionoideae). Kew Bulletin, 48 (4): 727-733