Não informado. (2012). Arboriculture & Urban Forestry. International Society of Arboriculture.
Chicago-viite (17. p.)Não informado. Arboriculture & Urban Forestry. Champaign, Ill: International Society of Arboriculture, 2012.
MLA-viite (8. p.)Não informado. Arboriculture & Urban Forestry. International Society of Arboriculture, 2012.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.