1. Itis (Integrated taxonomic information system): Fabaceae of North America Update database (version 2011); (updated for ITIS by the Flora of North America Expertise Network, in connection with an update for USDA PLANTS (2007–2010): http://www.itis.gov/servlet/SingleRpt/SingleRpt
2. Phillips E, Dyer RA (1989) Revista Sudamer. Bot. 1: 76, fig. 2 (1934). — Lock, Leg. Afr. Check-list: 265
3. Exotic-plants: http://www.exotic-plants.de/graines/graines-Afrique-du-Sud/Sutherlandia-frutescens.php
4. Blueskyorganics: http://www.blueskyorganics.co.za/?spa_products=70-olive-leaf-tea-with-30-sutherlandia-cancer-bush
5. Pousset JL (2004) Plantes médicinales d’Afrique. Comment les reconnaître et les utiliser. Ed. Édisud, La Calade, France