Dyfyniad APA

Doolittle, J. S. (1982). Energy: A crisis, a dilemma, or just another problem? (2nd ed.). Matrix Publishers.

Dyfyniad Arddull Chicago

Doolittle, Jesse Seymour. Energy: A Crisis, a Dilemma, or Just Another Problem? 2nd ed. Beaverton, Or.: Matrix Publishers, 1982.

Dyfyniad MLA

Doolittle, Jesse Seymour. Energy: A Crisis, a Dilemma, or Just Another Problem? 2nd ed. Matrix Publishers, 1982.

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