Philippines Bureau of Foreign Trade International Trade Organizations and Agreements Section. (1974). Primer on the generalized system of preferences. s.n.
Citace podle Chicago (17th ed.)Philippines Bureau of Foreign Trade International Trade Organizations and Agreements Section. Primer on the Generalized System of Preferences. [Quezon City: s.n, 1974.
Citace podle MLA (9th ed.)Philippines Bureau of Foreign Trade International Trade Organizations and Agreements Section. Primer on the Generalized System of Preferences. s.n, 1974.
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