Dyfyniad APA

FAO. (1997). FAO/IPGRI Technical guidelines for the safe movement of germplasm; No.18: Allium spp. Rome, Italy: FAO.

Dyfyniad Arddull Chicago

FAO. FAO/IPGRI Technical Guidelines for the Safe Movement of Germplasm; No.18: Allium Spp. Rome, Italy: FAO, 1997.

Dyfyniad MLA

FAO. FAO/IPGRI Technical Guidelines for the Safe Movement of Germplasm; No.18: Allium Spp. Rome, Italy: FAO, 1997.

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