Mziray, W. 1992. Taxonomic studies in Toddalieae Hook. F. (Rutaceae) in Africa. Symbolae Botanicae Upsaliensis 30-31: 126-128.
http://pza.sanbi.org/references/mziray-w-1992-taxonomic-studies-toddalieae-hook-f-rutaceae-africa-symbolae-botanicae