Callahan, J. R.; Davis, R. (1982). "Reproductive Tract and Evolutionary Relationships of the Chinese Rock Squirrel, Sciurotamias davidianus". Journal of Mammalogy. 63 (1): 42–47. doi:10.2307/1380669. JSTOR1380669.
Callahan, J. R.; Davis, R. (1982). "Reproductive Tract and Evolutionary Relationships of the Chinese Rock Squirrel, Sciurotamias davidianus". Journal of Mammalogy. 63 (1): 42–47. doi:10.2307/1380669. JSTOR1380669.