John P. Rafferty; Richard Pallardy, eds. (2009). "casuariiform". Encyclopedia Britannica. Archived from the original on 5 February 2011. Retrieved 16 August 2009.
John P. Rafferty; Richard Pallardy, eds. (2009). "casuariiform". Encyclopedia Britannica. Archived from the original on 5 February 2011. Retrieved 16 August 2009.