Randall, D. (2002). The polyurethanes book. New York: John Wiley & Sons, Ltd.
Dyfyniad Arddull ChicagoRandall, David. The Polyurethanes Book. New York: John Wiley & Sons, Ltd, 2002.
Dyfyniad MLARandall, David. The Polyurethanes Book. New York: John Wiley & Sons, Ltd, 2002.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.