Dyfyniad APA

Lewis, R. J. (2002). Hazardous chemicals desk reference. New York: J. Wiley.

Dyfyniad Arddull Chicago

Lewis, Richard J. Hazardous Chemicals Desk Reference. New York: J. Wiley, 2002.

Dyfyniad MLA

Lewis, Richard J. Hazardous Chemicals Desk Reference. New York: J. Wiley, 2002.

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