Dyfyniad APA

Richardson, M. (1992). Risk management of chemicals. Royal society of chemistry.

Dyfyniad Arddull Chicago

Richardson, Mervyn. Risk Management of Chemicals. Cambridge: Royal society of chemistry, 1992.

Dyfyniad MLA

Richardson, Mervyn. Risk Management of Chemicals. Royal society of chemistry, 1992.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.