Bachman, J. (1839)Archived January 7, 2009, at the Wayback Machine. Description of several new Species of American quadrupeds. Journal of the Academy of Natural Sciences of Philadelphia, 8, 57-74.
Ransome, D.B.; Sullivan, T.P. (2002). "Short-term population dynamics of Glaucomys sabrinus and Tamiasciurus douglasii in commercially thinned and unthinned stands of coastal coniferous forest". Canadian Journal of Forest Research. 32 (11): 2043–2050. doi:10.1139/x02-126.
Bachman, J. (1839)Archived January 7, 2009, at the Wayback Machine. Description of several new Species of American quadrupeds. Journal of the Academy of Natural Sciences of Philadelphia, 8, 57-74.