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Dyfyniad Arddull ChicagoFlyvbjerg, B., et al. Five Things You Should Know About Cost Overrun. Elsevier, 2018.
Dyfyniad MLAFlyvbjerg, B., et al. Five Things You Should Know About Cost Overrun. Elsevier, 2018.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.