Screen, P. (1987). Warwick process science: Section two. Ashford Press.
Dyfyniad Arddull ChicagoScreen, Peter. Warwick Process Science: Section Two. Southampton: Ashford Press, 1987.
Dyfyniad MLAScreen, Peter. Warwick Process Science: Section Two. Ashford Press, 1987.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.