Template:Barkla et al., 2008
- Barkla, J.W. et al. 2008: Homalanthus polyandrus (Euphorbiaceae) on Macauley Island, southern Kermadec Islands, with notes on that island's vascular flora. New Zealand journal of botany, 46(3): 373–379. DOI: 10.1080/00288250809509775