Patterson, G. B., R. A. Hitchmough, and D. G. Chapple. “Taxonomic Revision of the Ornate Skink (Oligosoma ornatum; Reptilia: Scincidae) Species Complex from Northern New Zealand”. Zootaxa, vol. 3736, no. 1, Nov. 2013, pp. 054–068, doi:10.11646/zootaxa.3736.1.2.