Worthy, T. H.; Scofield, R. P. (2012). Twenty-first century advances in knowledge of the biology of moa (Aves: Dinornithiformes): a new morphological analysis and moa diagnoses revised. New Zealand Journal of Zoology39 (2): p. 87–153. doi: https://doi.org/10.1080/03014223.2012.665060.