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The Angiosperm Phylogeny Group (2016), «An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG IV», Botanical Journal of the Linnean Society, 181: 1–10, doi:10.1111/boj.12385
Nickrent, D. L.; Blarer, A.; Qiu, Y.-L.; Soltis, D. E.; Soltis, P. S.; Zanis, M. (2002), «Molecular data place Hydnoraceae with Aristolochiaceae», American Journal of Botany, 89 (11): 1809–17, PMID21665609, doi:10.3732/ajb.89.11.1809