Dyfyniad APA

LeBel, P. G. (1982). Energy economics and technology. Baltimore: Johns Hopkins University Press.

Dyfyniad Arddull Chicago

LeBel, Phillip G. Energy Economics and Technology. Baltimore: Johns Hopkins University Press, 1982.

Dyfyniad MLA

LeBel, Phillip G. Energy Economics and Technology. Baltimore: Johns Hopkins University Press, 1982.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.