Douglas, G.W., and L-M. Richards. April 17, 1997. Field survey of Mount Tzuhalem Ecological Reserve to resurvey populations of Balsamorhiza deltoidea and Viola praemorsa var. praemorsa.

Douglas, G.W., and M. Ryan. 2001. Status of the Deltoid Balsamroot, Balsamorhiza deltoidea (Asteraceae) in Canada. Can. Field-Nat. 115(3):451-454.

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. Balsamorhiza deltoidea (edit 2010).In: Species at risk in Garry oak and associated ecosystems in British Columbia. Garry Oak Ecosystems Recovery Team, Victoria, British Columbia.

Hitchcock, C. L., and A. Cronquist. 1973. Flora of the Pacific Northwest. Univ. Wash. Press, Seattle.

Kruckeberg, A.R. 1982. Gardening with Native Plants of the Pacific Northwest. Douglas and McIntyre Press, Vancouver. 252pp.

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.

Maze, J., K.A. Robson, S. Banerjee, L.R. Bohm and R.K. Scagel. 1990. Quantitative studies in early ovule and fruit development: Developmental constraints in Balsamorhiza sagittata and B. hookeri. Botanical Gazette 15:415-422.

Ownbey, M., and W.A. Weber. 1943. Natural hybridization in the genus Balsamorhiza. Am. J. Bot. 36:179-187.

Roemer, H. 1993. Rare or interesting plants in B.C. Ecological Reserves and Ecological Reserve Proposed Areas.

Roemer, H. 2005. Synoptic table of Balsamorhiza deltoidea occurrences in British Columbia.

Roemer, Hans. 2002. A plant species inventory with emphasis on rare species: Fort Rodd Hill/Fisgard Lighthouse National Historic Sites. Rep. prepared for Parks Can., August 2002. 19pp. + app. and photos.

Roemer, Hans. 2003. Rare plant monitoring at Mill Hill Regional Park. A project carried out for Capital Regional District Parks. Roemer Field Botany Consulting. 19pp.+ photos and map.

Turner, N., and M.A.M. Bell. 1971. The ethnobotany of the Coast Salish Indians of Vancouver Island. Economic Bot. 25: 63-104.

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.