Tài liệu tham khảo

WikiPedia: Ngựa_vằn_Grevy http://www.thewildclassroom.com/biomes/speciesprof... http://www.departments.bucknell.edu/biology/resour... http://www.animalorphanagekenya.org/members/grevy_... http://www.arkive.org/species/GES/mammals/Equus_gr... http://www.awf.org/content/wildlife/detail/grevysz... http://www.grevyszebratrust.org/ //www.worldcat.org/oclc/62265494 http://chinhphu.vn/portal/page/portal/chinhphu/het... https://web.archive.org/web/20060509183513/http://... https://web.archive.org/web/20161202135418/http://...