(1972). (The) International encyclopaedia of physical chemistry and chemical physis. Pergamon Press.
Dyfyniad Arddull Chicago(The) International Encyclopaedia of Physical Chemistry and Chemical Physis. Oxford: Pergamon Press, 1972.
Dyfyniad MLA(The) International Encyclopaedia of Physical Chemistry and Chemical Physis. Pergamon Press, 1972.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.