Testimony presented before the Los Angeles Field Hearing of the National Surface Transportation Policy and Revenue Study Commission on February 21, 2007.
Wachs, Martin, Beyond the Gas Tax: Alternatives for a Greener World. Santa Monica, CA: RAND Corporation, 2007. https://www.rand.org/pubs/testimonies/CT274.html.
Wachs, Martin, Beyond the Gas Tax: Alternatives for a Greener World, Santa Monica, Calif.: RAND Corporation, CT-274, 2007. As of September 08, 2021: https://www.rand.org/pubs/testimonies/CT274.html