How Much Would You Pay for a Ton of Carbon? It Depends Getting to Zero: Defining Corporate Carbon Neutrality, edited by B. Burtis and I. Watt A Consumer's Guide to Retail Carbon Offset Providers, edited by Bill Burtis Voluntary Carbon Markets: An International Business Guide to What They Are and How They Work, by Ricardo Bayon, Amanda Hawn, and Katherine Hamilton The Greenhouse Gas Protocol: A Corporate Accounting and Reporting Standard (revised edition), by the World Resources Institute and the World Business Council for Sustainable Development Reducing U.S. Greenhouse Gas Emissions: How Much at What Cost? by Jon Creyts, Anton Derkach, Scott Nyquist, Ken Ostrowski, and Jack Stephenson