Buck, C.L.; Barnes, B.M. (1999). “Annual cycle of body composition and hibernation in free-living arctic ground squirrels”. 《Journal of Mammalogy》 80 (2): 430–442. doi:10.2307/1383291.
Nadler C, Hopkins RS (1976). Patterns of evolution and migration in the arctic ground squirrel, Spermophilus parryii (Richardson). [Internet]. Chicago (ZL) U.S.A.: Department of Medicine, Northwestern University Medical School, and the University of Kansas, Lawrence (KS) U.S.A.: Museum of Natural History and Department of Systematics and Ecology; [updated 1976 Oct 20; cited 2013 Nov 10]. Available from: http://www.nrcresearchpress.com/doi/pdf/10.1139/z77-097.
