1. Bailey R.G., Jensen M.E., Cleland D.T. and Bourgeron P.S. 1984. Design and use of ecological mapping units. In: Jensen M.E. and Bourgeron P.S. (eds), Eastside Forest Ecosystem Health Assessment. (Technical Editors), Pacific Northwest Research Station: U.S. Department of Agriculture, Forest Service, pp. 95–106.
2. Bourgeron P.S. and Jensen M.E. 1984. An overview of ecological principles for ecosystem management. In: Jensen M.E. and Bourgeron P.S. (eds), Eastside Forest Ecosystem Health Assessment. (Technical Editors), Pacific Northwest Research Station: U.S. Department of Agriculture, Forest Service, pp. 45–57.