«Sophora sect. Edwardsia (Fabaceae): further evidence from nrDNA sequence data of a recent and rapid radiation around the Southern Oceans». Bot J Linn Soc140 (4): 435–441. 2002. doi:10.1046/j.1095-8339.2002.00101.x.
Heenan PB (2001). «The correct name for Chilean pelú (Fabaceae): the identity of Edwardsia macnabiana and the reinstatement of Sophora cassioides». New Zealand J Bot39 (1): 167–170. doi:10.1080/0028825X.2001.9512725.
Staff writer(s); no by-line., «ILDIS LegumeWeb entry for Sophora», International Legume Database & Information Service (Cardiff School of Computer Science & Informatics), henta 18 May 2014