Rolfe, C., Michaelowa, A., & Dutschke, M. (1999). Closing the Gap: A Comparison of Approaches to Encourage Early Greenhouse Gas Emission Reductions.
Cita Chicago (17th ed.)Rolfe, Chris, Axel Michaelowa, i Michael Dutschke. Closing the Gap: A Comparison of Approaches to Encourage Early Greenhouse Gas Emission Reductions. Hamburg, 1999.
Cita MLA (8th ed.)Rolfe, Chris, et al. Closing the Gap: A Comparison of Approaches to Encourage Early Greenhouse Gas Emission Reductions. 1999.
Atenció: Aquestes cites poden no estar 100% correctes.