↑ Berger J (2008). "Undetected species losses, food webs, and ecological baselines: a cautionary tale from the Greater Yellowstone Ecosystem, USA". Oryx. 42 (1): 139. doi:10.1017/S0030605308001051.
↑ Gunther, Kerry (2009). "Presence and Distribution of White-tailed Jackrabbits in Yellowstone National Park". Yellowstone Science. 17 (1): 24–32. Parameter |coauthors= tidak diketahui diabaikan (guna |author=) (bantuan); |access-date= memerlukan |url= (bantuan)
