APA (7th ed.) Citation

Ingram, G. K., & Liu, Z. (1998). Vehicles, roads, and road use: Alternative empirical specifications. World Bank, Research Advisory Group and Transport, Water, and Urban Development Department, Transport Division.

Chicago Style (17th ed.) Citation

Ingram, Gregory K., and Zhi Liu. Vehicles, Roads, and Road Use: Alternative Empirical Specifications. Washington, DC: World Bank, Research Advisory Group and Transport, Water, and Urban Development Department, Transport Division, 1998.

MLA (9th ed.) Citation

Ingram, Gregory K., and Zhi Liu. Vehicles, Roads, and Road Use: Alternative Empirical Specifications. World Bank, Research Advisory Group and Transport, Water, and Urban Development Department, Transport Division, 1998.