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Dyfyniad Arddull ChicagoWorld Health Organization. Regional Report on Status of Road Safety: The South-East Asia Region. 2009.
Dyfyniad MLAWorld Health Organization. Regional Report on Status of Road Safety: The South-East Asia Region. 2009.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.