Organisation for Economic Co-operation and Development. (1988). The telecommunications industry: The challenges of structural change. Paris: Organisation for Economic Co-operation and Development.
Dyfyniad Arddull ChicagoOrganisation for Economic Co-operation and Development. The Telecommunications Industry: The Challenges of Structural Change. Paris: Organisation for Economic Co-operation and Development, 1988.
Dyfyniad MLAOrganisation for Economic Co-operation and Development. The Telecommunications Industry: The Challenges of Structural Change. Paris: Organisation for Economic Co-operation and Development, 1988.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.