Biosecurity New Zealand 2012: Regional Pest Management Strategies Database. http://www.biosecurityperformance.maf.govt.nz/ [as Pithecoctenium crucigerum (L.) A.H.Gentry]
Heenan, P.B.; de Lange, P.J.; Cameron, E.K.; Parris, B.S. 2008: Checklist of dicotyledons, gymnosperms, and pteridophytes naturalised or casual in New Zealand: additional records 2004–06. New Zealand Journal of Botany 46: 257–283.
Lohmann, L.G.; Taylor, C.M. 2014: A new generic classification of tribe Bignoniaceae. Annals of the Missouri Botanical Garden 99(3): 348–489.
Ministry for Primary Industries 23 Feb 2017: Unwanted Organisms Register. Version 02.01.02. https://www1.maf.govt.nz/uor [as Pithecoctenium crucigerum (L.) A.H.Gentry]