Callan, B., Dennis, J. and Thomson, A. (n.d.) PFC Herbarium (DAVFP) Collections Database. Natural Resources Canada, Canadian Forest Service, Pacific Forestry Centre, Victoria, BC, Canada. Retrieved [enter DD/MM/YYYY] from http://www.pfc.cfs.nrcan.gc.ca/biodiversity/herbarium/voucher_specimens_e.html
Callan, B., Thomson, A., Fernando, A., Ring, F., and Lowe, D. (n.d.) PFC
Index of Plant Pathogens, Plant Associated Microorganisms and Forest Fungi
of British
Columbia. Natural Resources Canada, Canadian Forest Service, Pacific Forestry
Centre, Victoria, BC, Canada. Retrieved [enter DD/MM/YYYY] from:
http://www.pfc.cfs.nrcan.gc.ca/biodiversity/herbarium/herbarium-herbier_e.html
Note: (n.d.) stands for “no date”