A.P.G. II. 2003. An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG II. Bot. J. Linnean Soc. 141: 399-436.

A.P.G. II. 2003. An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG II. Bot. J. Linnean Soc. 141: 399-436.
http://pza.sanbi.org/references/apg-ii-2003-update-angiosperm-phylogeny-group-classification-orders-and-families