Dyfyniad APA
(1969). Cleaning our enviroment: The chemical basis for action. American chemical society.
Dyfyniad Arddull Chicago
Cleaning Our Enviroment: The Chemical Basis for Action. Wshington: American chemical society, 1969.
Dyfyniad MLA
Cleaning Our Enviroment: The Chemical Basis for Action. American chemical society, 1969.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.