APA-viite (7. p.)
Gordon, J. C. (2007). Planning research: A concise guide for the environmental and natural resource sciences. Yale University Press.
Chicago-viite (17. p.)
Gordon, J. C. Planning Research: A Concise Guide for the Environmental and Natural Resource Sciences. New Haven: Yale University Press, 2007.
MLA-viite (9. p.)
Gordon, J. C. Planning Research: A Concise Guide for the Environmental and Natural Resource Sciences. Yale University Press, 2007.
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