Goodship, V. (2007). Introduction to plastics recycling (2nd ed.). Smithers Rapra.
Dyfyniad Arddull ChicagoGoodship, Vannessa. Introduction to Plastics Recycling. 2nd ed. Shawbury, U.K.: Smithers Rapra, 2007.
Dyfyniad MLAGoodship, Vannessa. Introduction to Plastics Recycling. 2nd ed. Smithers Rapra, 2007.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.