Haston, E., Richardson, J. E., Stevens, P. F., Chase, M. W., Harris, D. J. (2007). “A linear sequence of Angiosperm Phylogeny Group II families”. 《Taxon》 56 (1): 7–12. doi:10.2307/25065731.
* Doust, A. N. & Stevens, P. F.(2005). A Reinterpretation of the Staminate Flowers of Haptanthus.Systematic Botany 30(4): 779–785.(available online[깨진 링크(과거 내용 찾기)])
web.archive.org
* Doust, A. N. & Stevens, P. F.(2005). A Reinterpretation of the Staminate Flowers of Haptanthus.Systematic Botany 30(4): 779–785.(available online[깨진 링크(과거 내용 찾기)])