Dyfyniad APA

(1997). Tobacco: World markets and trade. l997: Leaf exports for selected countries. USA: United States Department of agriculture.

Dyfyniad Arddull Chicago

Tobacco: World Markets and Trade. L997: Leaf Exports for Selected Countries. USA: United States Department of agriculture, 1997.

Dyfyniad MLA

Tobacco: World Markets and Trade. L997: Leaf Exports for Selected Countries. USA: United States Department of agriculture, 1997.

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