Foden, W. & Potter, L. 2005. Berkheya multijuga (DC.) Roessler. National Assessment: Red List of South African Plants version 2020.1. Accessed on 2022/06/163.
http://pza.sanbi.org/references/foden-w-potter-l-2005-berkheya-multijuga-dc-roessler-national-assessment-red-list-south