Dyfyniad APA

Ashby, M. F. (2012). Materials and the environment: Eco-informed material choice (2nd ed.). Butterworth-Heinemann.

Dyfyniad Arddull Chicago

Ashby, M. F. Materials and the Environment: Eco-informed Material Choice. 2nd ed. Waltham, MA: Butterworth-Heinemann, 2012.

Dyfyniad MLA

Ashby, M. F. Materials and the Environment: Eco-informed Material Choice. 2nd ed. Butterworth-Heinemann, 2012.

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