Gaya APA

Friederici, P. (2003). SOCIETY FOR ECOLOGICAL RESTORATION INTERNATIONAL : Ecological Restoration of Southwestern Ponderosa Pine Forest (-). Washington, D.C: Island Press.

Gaya MLA

Friederici, Peter. "SOCIETY FOR ECOLOGICAL RESTORATION INTERNATIONAL : Ecological Restoration of Southwestern Ponderosa Pine Forest". - Washington, D.C: Island Press, 2003. Text.