アゼナ科
“The Linderniaceae and Gratiolaceae are further lineages distinct from the Scrophulariaceae (Lamiales)” (pdf). Pl. Biol. (Stuttgart) 7: 67-78. doi:10.1055/s-2004-830444. http://webhost.ua.ac.be/funmorph/raoul/fylsyst/Rahmanzadeh2005.pdf.
The Angiosperm Phylogeny Group (2009). “An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG III” (PDF). Botanical Journal of the Linnean Society 161 (2): 105-121. http://onlinelibrary.wiley.com/doi/10.1111/j.1095-8339.2009.00996.x/pdf.