Dyfyniad APA

Hinrichs, R., & Kleinbach, M. H. (2013). Energy: Its use and the environment (5th ed.). Brooks/Cole.

Dyfyniad Arddull Chicago

Hinrichs, Roger, and Merlin H. Kleinbach. Energy: Its Use and the Environment. 5th ed. Boston, MA: Brooks/Cole, 2013.

Dyfyniad MLA

Hinrichs, Roger, and Merlin H. Kleinbach. Energy: Its Use and the Environment. 5th ed. Brooks/Cole, 2013.

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