Dyfyniad APA

Open University, Boyle, G., Everett, B., & Ramage, J. (2003). Energy systems and sustainability. Oxford University Press, in association with the Open University.

Dyfyniad Arddull Chicago

Open University, Godfrey Boyle, Bob Everett, and Janet Ramage. Energy Systems and Sustainability. Oxford ; New York: Oxford University Press, in association with the Open University, 2003.

Dyfyniad MLA

Open University, et al. Energy Systems and Sustainability. Oxford University Press, in association with the Open University, 2003.

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