Reichel (1988). "Habitat use by Alpine Mammals in the Pacific Northwest". Arctic and Alpine Research. 18 (1): 111—119. doi:10.2307/1551218. JSTOR1551218.
Reichel (1988). "Habitat use by Alpine Mammals in the Pacific Northwest". Arctic and Alpine Research. 18 (1): 111—119. doi:10.2307/1551218. JSTOR1551218.