Dyfyniad APA

León, P. (1997). Biosecurity in the use of genetically modified crops.

Dyfyniad Arddull Chicago

León, Pedro. Biosecurity in the Use of Genetically Modified Crops. 1997.

Dyfyniad MLA

León, Pedro. Biosecurity in the Use of Genetically Modified Crops. 1997.

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