APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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

Kontuz: berrikusi erreferentzia hauek erabili aurretik.