ebrary, Inc, & Rossotto, C. M. (2004). Competition in international voice communications. World Bank.
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Dyfyniad Arddull Chicago
ebrary, Inc, and Carlo Maria Rossotto. Competition in International Voice Communications. Washington, DC: World Bank, 2004.
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Dyfyniad MLA
ebrary, Inc, and Carlo Maria Rossotto. Competition in International Voice Communications. World Bank, 2004.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.