Chase, M. W., (1993). «Phylogenetics of Seed Plants: An Analysis of Nucleotide Sequences from the Plastid Gene rbcL». Annals of the Missouri Botanical Garden. 80 (3): 528-580. JSTOR2399846. doi:10.2307/2399846.CS1-vedlikehold: Flere navn: forfatterliste (link)
The Angiosperm Phylogeny Group (1998). «An Ordinal Classification for the Families of Flowering Plants». Annals of the Missouri Botanical Garden. 85(4): 531-553. JSTOR2992015. doi:10.2307/2992015.
Chase, M. W., (1993). «Phylogenetics of Seed Plants: An Analysis of Nucleotide Sequences from the Plastid Gene rbcL». Annals of the Missouri Botanical Garden. 80 (3): 528-580. JSTOR2399846. doi:10.2307/2399846.CS1-vedlikehold: Flere navn: forfatterliste (link)
The Angiosperm Phylogeny Group (1998). «An Ordinal Classification for the Families of Flowering Plants». Annals of the Missouri Botanical Garden. 85(4): 531-553. JSTOR2992015. doi:10.2307/2992015.