1. AASHTO. (1978). A Manual on User Benefit Analysis of Highway and Bus-Transit Improvements-1977, Washington, DC: American Association of State Highway and Transportation Officials.
2. Adler, Hans A. (1987). Economic Appraisal of Transport Projects: A Manual With Case Studies, published for the World Bank, Baltimore, MD: Johns Hopkins.
3. Advisory Commission on Intergovernmental Relations. (1993). Applying Benefit-Cost Analysis to Investment Options: Statement of Principles and Guidelines, SR-16, Washington, DC: ACIR, November.
4. Anderson, Lee G. and Russell Settle. (1977). Benefit-Cost Analysis: A Practical Guide, Lexington, MA: DC Heath
5. Apogee Research. (1994). The Costs of Transportation, prepared for the Conservation Law Foundation, Washington, DC: Apogee, Marc