Shipunov, A. & Shipunova, E. (2011), "Haptanthus story: Rediscovery of enigmatic flowering plant from Honduras", American Journal of Botany, 98 (4): 761–763, doi:10.3732/ajb.1000307, PMID21613172
Goldberg, Aaron & Nelson S., Cirilo (1989), "Haptanthus, a New Dicotyledonous Genus from Honduras", Systematic Botany, 14 (1): 16–19, doi:10.2307/2419047, JSTOR2419047
Angiosperm Phylogeny Group (2009), "An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG III", Botanical Journal of the Linnean Society, 161 (2): 105–121, doi:10.1111/j.1095-8339.2009.00996.x, hdl:10654/18083
Angiosperm Phylogeny Group (2009), "An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG III", Botanical Journal of the Linnean Society, 161 (2): 105–121, doi:10.1111/j.1095-8339.2009.00996.x, hdl:10654/18083
Goldberg, Aaron & Nelson S., Cirilo (1989), "Haptanthus, a New Dicotyledonous Genus from Honduras", Systematic Botany, 14 (1): 16–19, doi:10.2307/2419047, JSTOR2419047
Shipunov, A. & Shipunova, E. (2011), "Haptanthus story: Rediscovery of enigmatic flowering plant from Honduras", American Journal of Botany, 98 (4): 761–763, doi:10.3732/ajb.1000307, PMID21613172