Rolfe, C., Michaelowa, A., & Dutschke, M. (1999). Closing the Gap: A Comparison of Approaches to Encourage Early Greenhouse Gas Emission Reductions.
Chicago-viite (17. p.)Rolfe, Chris, Axel Michaelowa, ja Michael Dutschke. Closing the Gap: A Comparison of Approaches to Encourage Early Greenhouse Gas Emission Reductions. Hamburg, 1999.
MLA-viite (8. p.)Rolfe, Chris, et al. Closing the Gap: A Comparison of Approaches to Encourage Early Greenhouse Gas Emission Reductions. 1999.
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