Article du Bulletin

Inventory methods for Pikas and Sciurids : Pikas, Marmots, Woodchucks, Chipmunks and Squirrels [Méthodes d'inventaire pour le Pikas et les Sciuridae : Pikas, marmottes communes, tamias et les écureuils].

British Columbia Ministry of Environment, Lands and Parks Resources Inventory Branch · 1988 · Standards for components of British Columbia’s biodiversity, 29 :1-70.