1. Waka Kotahi NZ Transport Agency, National Land Transport Fund annual report (2020).
2. New Zealand Government, National Infrastructure Report (Wellington, 2011).
3. R. Eddington, The Eddington Transport Study. Main Report: Transport’s Role in Sustaining the UK’s Productivity and Competitiveness (2006).
4. Is public expenditure productive?
5. T. Leunig, Cart, or horse: Transport and economic growth (2011).