United Nations Conference on Trade and Development. (2018). Commodities at a glance: Special issue on gum arabic. United Nations.
Citace podle Chicago (17th ed.)United Nations Conference on Trade and Development. Commodities at a Glance: Special Issue on Gum Arabic. New York: United Nations, 2018.
Citace podle MLA (9th ed.)United Nations Conference on Trade and Development. Commodities at a Glance: Special Issue on Gum Arabic. United Nations, 2018.
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