Heiduk, G. S., & Wong, K. (2005). WTO and World Trade: Challenges in a New Era. Physica-Verlag HD. https://doi.org/10.1007/b138995
Lua i Stíl Chicago (17ú heag.)Heiduk, Gnter S., agus Kar-yiu Wong. WTO and World Trade: Challenges in a New Era. Heidelberg: Physica-Verlag HD, 2005. https://doi.org/10.1007/b138995.
Lua MLA (9ú heag.)Heiduk, Gnter S., agus Kar-yiu Wong. WTO and World Trade: Challenges in a New Era. Physica-Verlag HD, 2005. https://doi.org/10.1007/b138995.
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