Pruetz, R. (2012). Lasting value: Open space planning and preservation successes. APA Planners.
Lua i Stíl Chicago (17ú heag.)Pruetz, Rick. Lasting Value: Open Space Planning and Preservation Successes. Chicago, Ill: APA Planners, 2012.
Lua MLA (9ú heag.)Pruetz, Rick. Lasting Value: Open Space Planning and Preservation Successes. APA Planners, 2012.
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