Template:Heenan at el., 2004
- Heenan, P.B., Dawson, M.I. & Wagstaff, S.J. 2004. The relationship of Sophora sect. Edwardsia (Fabaceae) to Sophora tomentosa, the type species of the genus Sophora, observed from DNA sequence data and morphological characters. Botanical Journal of the Linnean Society 146(4): 439-446. DOI: 10.1111/j.1095-8339.2004.00348.x