1. Alberta Government.Alberta’s Climate Change Plan; January 24, 2008.
2. Alberta Government. Alberta Water Directive.Alberta ERCB Draft Directive on Oil Sands Tailings Management and Enforcement Criteria; 2008.
3. The California Energy Commission.Low Carbon Fuel Standard; 2007.http://www.energy.ca.gov/low_carbon_fuel_standard/index.html.
4. U.K. Department for Transport.Renewable Transport Fuel Obligation; 2008.
5. Quantifying land use of oil sands production: a life cycle perspective