Douglas, G.W., and S.J. Smith. 2004e. Draft Stewardship Account on California hedge-parsley Yabea microcarpa. Prepared for B.C. Minist. Water, Land and Air Prot. Sponsored by Parks Canada. Victoria, BC. 21pp.

Douglas, G.W., D. Meidinger, and J. Penny. 2002. Rare Native Vascular Plants of British Columbia, 2nd ed. B.C. Conserv. Data Centre, Terrestrial Inf. Branch, Victoria. 358pp.

Douglas, G.W., G.D. Straley, and D. Meidinger, eds. 1998b. Illustrated Flora of British Columbia, Vol. 1, Gymnosperms and Dicotyledons (Aceraceae through Asteraceae). B.C. Minist. Environ., Lands and Parks, Wildl. Branch, and B.C. Minist. For. Res. Program. 436pp.

Garry Oak Ecosystems Recovery Team. 2003. Yabea microcarpa (edit 2007). In: Species at risk in Garry oak and associated ecosystems in British Columbia. Garry Oak Ecosystems Recovery Team, Victoria, British Columbia.

Lea, E. 2002. Historical Garry Oak ecosystems of Greater Victoria and the Saanich Peninsula. 1:20,000 scale maps. Prepared for Garry Oak Ecosystems Recovery Team by Terrestrial Inf. Branch, B.C. Minist. Sustainable Resour. Manage., Victoria.

Cross-Linked Information Resources (CLIR): an umbrella search web application that allows users to use a single window to simultaneously search six provincial environmental and natural resource information e-libraries and provides access to digital documents in these e-libraries.