Dyfyniad APA
Erickson, E. W., & Waverman, L. (1974). The Energy question: An international failure of policy. University of Toronto Press.
Dyfyniad Arddull Chicago
Erickson, Edward W., and Leonard Waverman. The Energy Question: An International Failure of Policy. [Toronto, Buffalo, N.Y.]: University of Toronto Press, 1974.
Dyfyniad MLA
Erickson, Edward W., and Leonard Waverman. The Energy Question: An International Failure of Policy. University of Toronto Press, 1974.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.