Heiduk, G. S., & Wong, K. (2005). WTO and World Trade: Challenges in a New Era. Physica-Verlag HD. https://doi.org/10.1007/b138995

Heiduk, Gnter S., and Kar-yiu Wong. WTO and World Trade: Challenges in a New Era. Heidelberg: Physica-Verlag HD, 2005. https://doi.org/10.1007/b138995.

Heiduk, Gnter S., and Kar-yiu Wong. WTO and World Trade: Challenges in a New Era. Physica-Verlag HD, 2005. https://doi.org/10.1007/b138995.