Velayudham, T. (2000). Foreign Trade: Theory & Practice. Wheeler.
Lua i Stíl Chicago (17ú heag.)Velayudham, T.K. Foreign Trade: Theory & Practice. New Delhi: Wheeler, 2000.
Lua MLA (9ú heag.)Velayudham, T.K. Foreign Trade: Theory & Practice. Wheeler, 2000.
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