Ibrahim, U.I., et al. “Endoparasites and Associated Worm Burden of Captive and Free-Living Ostriches (Struthio Camelus) in the Semi-Arid Region of North Eastern Nigeria”. International Journal of Poultry Science, vol. 5, no. 12, Nov. 2006, pp. 1128–1132, https://doi.org/10.3923/ijps.2006.1128.1132.