Smith, C.C. (November 1978). "Structure and function of the vocalizations of tree squirrels (Tamiasciurus)". Journal of Mammalogy. 59 (4): 793–808. doi:10.2307/1380144. JSTOR1380144.
Smith, C.C. (November 1978). "Structure and function of the vocalizations of tree squirrels (Tamiasciurus)". Journal of Mammalogy. 59 (4): 793–808. doi:10.2307/1380144. JSTOR1380144.