International Society of Arboriculture. (2000). Tree health management evaluating trees for hazard. U.S.A: American Forestry Association.
Chicago-tyylinen lähdeviittausInternational Society of Arboriculture. Tree Health Management Evaluating Trees for Hazard. U.S.A: American Forestry Association, 2000.
MLA-viiteInternational Society of Arboriculture. Tree Health Management Evaluating Trees for Hazard. U.S.A: American Forestry Association, 2000.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.