Dyfyniad APA

Organisation for Economic Co-operation and Development. (2017). Ex-post assessment of transport investments and policy interventions. OECD.

Dyfyniad Arddull Chicago

Organisation for Economic Co-operation and Development. Ex-post Assessment of Transport Investments and Policy Interventions. Paris: OECD, 2017.

Dyfyniad MLA

Organisation for Economic Co-operation and Development. Ex-post Assessment of Transport Investments and Policy Interventions. OECD, 2017.

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