Australian Plant Census (2011) available at: Vascular Plants APNI (biodiversity.org.au)
Australia's Virtual Herbarium (AVH) (2008). Council of Heads of Australian Herbaria (CHAH). Available at: Home - AVH (chah.org.au)
Galetto, L., Bernardello, G., Isele, I. C., Vesprini, J., Speroni, G. and Berduc, A. (2000). Reproductive biology of Erythrina crista-galli (Fabaceae). Annals of the Missouri Botanical Garden, 2000, Vol.87, No.2, pp.127-145.
National Herbarium of New South Wales (2008). Records from the NSWdata specimen database.
Navie S. (2004). Declared Plants of Australia. An identification and information system. Centre for Biological Information Technology: Brisbane. [CD-ROM]
Pittwater Council (undated). Wetland Restoration: Warriewood Wetlands and Irrawong Reserve. Environment and Rehabilitation Program.
Plants for a Future (2008). Erythrina crista-galli - L. Coral Tree. Plants for a Future - Edible, medicinal and useful plants for a healthier world. Available at Erythrina crista-galli Coral Tree, Crybabytree PFAF Plant Database
Riley, S. (undated). Erythrina x sykessi. Wilsons Creek Huonbrook Landcare Incorporated.
Sydney Weeds Committees (undated). Cocks Comb Coral Tree.
Weeds of Australia (2016). Erythrina crista-galli fact sheet. Available at Erythrina crista-galli (lucidcentral.org)
NSW Weedwise (2018). Cockspur coral tree (Erythrina crista-galli) fact sheet. Available at: NSW WeedWise