Alan Thein Durning. (1992). How much is enough: The consumer society and the future of the earth. W.W. Norton & Company.
Trích dẫn kiểu ChicagoAlan Thein Durning. How Much Is Enough: The Consumer Society and the Future of the Earth. New York: W.W. Norton & Company, 1992.
Trích dẫn MLAAlan Thein Durning. How Much Is Enough: The Consumer Society and the Future of the Earth. W.W. Norton & Company, 1992.
Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.