C. Baker, S., Chilvers, B. L., Constantine, R., DuFresne, S., Mattlin, R. H., van Helden, A., & Hitchmough, R.. (2010).
Conservation status of New Zealand marine mammals (suborders Cetacea and Pinnipedia), 2009.
New Zealand Journal of Marine and Freshwater Research,
44(2), 101 - 115. doi:10.1080/00288330.2010.482970