1. BirdLife International, 2004a. State of the World’s Birds 2004: Indicators for our Changing World. BirdLife International, Cambridge.
2. BirdLife International, 2004b. Threatened Birds of the World. CD-ROM. BirdLife International, Cambridge.
3. Bushmeat hunting, wildlife declines, and fish supply in West Africa;Brashares;Science,2004
4. Brooks, D.M., Strahl, S.D., 2000. Currasows, Guans and Chachalacas. Status survey and conservation action plan for Cracids 2000–2004. IUCN/SSC Specialist Group, IUCN, Gland and Cambridge.
5. Human population density and extinction risk in the world’s carnivores;Cardillo;PLOS Biology,2004