Dyfyniad APA

 Roberts, S. M. (2015).  Principles of toxicology: Environmental and industrial applications.  Wiley.

Dyfyniad Arddull Chicago

 Roberts, Stephen M.  Principles of Toxicology: Environmental and Industrial Applications.  Wiley, 2015.

Dyfyniad MLA

 Roberts, Stephen M.  Principles of Toxicology: Environmental and Industrial Applications.  Wiley, 2015.

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