Não informado. (2012). Arboriculture & Urban Forestry. International Society of Arboriculture.
Lua i Stíl Chicago (17ú heag.)Não informado. Arboriculture & Urban Forestry. Champaign, Ill: International Society of Arboriculture, 2012.
Lua MLA (8ú heag.)Não informado. Arboriculture & Urban Forestry. International Society of Arboriculture, 2012.
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