For Robinia
Ashe, W.W. 1922. The eastern shrubby species of Robinia. J. Elisha Mitchell Sci. Soc. 37: 175-177.
Isely, D. 1990. Leguminosae (Fabaceae), volume 3, part 2, Vascular flora of the southeastern United States. University of North Carolina Press, Chapel Hill, NC.
Isely, D. 1998. Native and naturalized Leguminosae (Fabaceae) of the United States (exclusive of Alaska and Hawaii). Monte L. Bean Life Science Museum, Brigham Young Univ., Provo, UT.
Isely, D., and F.J. Peabody. 1984. Robinia (Leguminosae: Papilionoideae). Castanea 49: 187-202.
Peabody, F.J. 1984. Revision of the genus Robinia (Leguminosae: Papilionoideae). Ph.D. disertation, Iowa State Univ., Ames, IA.