Barnes, P. (2001). Who Owns the Sky: Our Common Assets the Future of Capitalism. Whasington: Island Press.
استشهاد بنمط شيكاغوBarnes, Peter. Who Owns the Sky: Our Common Assets the Future of Capitalism. Whasington: Island Press, 2001.
MLA استشهادBarnes, Peter. Who Owns the Sky: Our Common Assets the Future of Capitalism. Whasington: Island Press, 2001.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.