Template:Armstrong & de Lange, 2005
- Armstrong, T.T.J.; de Lange, P.J. 2005: Conservation genetics of Hebe speciosa (Plantaginaceae) an endangered New Zealand shrub. Botanical journal of the Linnean Society, 149(2): 229–239. DOI: 10.1111/j.1095-8339.2005.00437.x