Lahde, J. A. (1982). Planning for change: A course of study in ecological planning. Teachers College Press.
Lua i Stíl Chicago (17ú heag.)Lahde, James A. Planning for Change: A Course of Study in Ecological Planning. New York: Teachers College Press, 1982.
Lua MLA (9ú heag.)Lahde, James A. Planning for Change: A Course of Study in Ecological Planning. Teachers College Press, 1982.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.