Ward, J. S. (2004). Eastern hemlock forests: Guidelines to minimize the impacts of hemlock woolly adelgid. Connecticut Agricultural Experiment Station ; USDA Forest Service, Northeastern Research Station ; USDA Forest Service, Northeastern Area, State and Private Forestry.
Chicago Style (17th ed.) CitationWard, Jeffrey S. Eastern Hemlock Forests: Guidelines to Minimize the Impacts of Hemlock Woolly Adelgid. New Haven, Conn. : Hamden, Conn. : Morgantown, W. Va.: Connecticut Agricultural Experiment Station ; USDA Forest Service, Northeastern Research Station ; USDA Forest Service, Northeastern Area, State and Private Forestry, 2004.
MLA (9th ed.) CitationWard, Jeffrey S. Eastern Hemlock Forests: Guidelines to Minimize the Impacts of Hemlock Woolly Adelgid. Connecticut Agricultural Experiment Station ; USDA Forest Service, Northeastern Research Station ; USDA Forest Service, Northeastern Area, State and Private Forestry, 2004.