Frank Ackerman. (1997). Why do we recycle?: Markets, values, and public policy. Washington, D.C: Island Press.
استشهاد بنمط شيكاغوFrank Ackerman. Why Do We Recycle?: Markets, Values, and Public Policy. Washington, D.C: Island Press, 1997.
MLA استشهادFrank Ackerman. Why Do We Recycle?: Markets, Values, and Public Policy. Washington, D.C: Island Press, 1997.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.