Barnes, P. (2001). Who owns the sky?: Our common assets and the future of capitalism. Washington, DC: Island Press.
استشهاد بنمط شيكاغوBarnes, Peter. Who Owns the Sky?: Our Common Assets and the Future of Capitalism. Washington, DC: Island Press, 2001.
MLA استشهادBarnes, Peter. Who Owns the Sky?: Our Common Assets and the Future of Capitalism. Washington, DC: Island Press, 2001.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.