Dyfyniad APA

Copping, L. G. (1996). Crop protection agents from nature. The Royal Society of Chemistry.

Dyfyniad Arddull Chicago

Copping, Leonard G. Crop Protection Agents from Nature. Cambridge: The Royal Society of Chemistry, 1996.

Dyfyniad MLA

Copping, Leonard G. Crop Protection Agents from Nature. The Royal Society of Chemistry, 1996.

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