Grayson, L. E. (1975). Economics of energy. Princeton: The Darwin Press.
Trích dẫn kiểu ChicagoGrayson, Leslie E. Economics of Energy. Princeton: The Darwin Press, 1975.
MLA引文Grayson, Leslie E. Economics of Energy. Princeton: The Darwin Press, 1975.
警告：這些引文格式不一定是100％准確.