"AskOxford: G". Collective Terms for Groups of Animals. Oxford, United Kingdom: Oxford University Press. Archived from the original on 20 October 2008. Retrieved 19 September 2011.
web.archive.org
"AskOxford: G". Collective Terms for Groups of Animals. Oxford, United Kingdom: Oxford University Press. Archived from the original on 20 October 2008. Retrieved 19 September 2011.