Gaya APA

Thomas, K., Geller, L. (2013). Urban Forestry: Toward an Ecosystem Services Research Agenda: A Workshop Summary . Washington, D.C.: National Academies Press.

Gaya MLA

Thomas, Katie., Geller, Laurie. "Urban Forestry: Toward an Ecosystem Services Research Agenda: A Workshop Summary". Washington, D.C.: National Academies Press, 2013. e-book.