Rolfe, C., Michaelowa, A., & Dutschke, M. (1999). Closing the Gap: A Comparison of Approaches to Encourage Early Greenhouse Gas Emission Reductions.
Chicago-Zitierstil (17. Ausg.)Rolfe, Chris, Axel Michaelowa, 与 Michael Dutschke. Closing the Gap: A Comparison of Approaches to Encourage Early Greenhouse Gas Emission Reductions. Hamburg, 1999.
MLA-Zitierstil (8. Ausg.)Rolfe, Chris, et al. Closing the Gap: A Comparison of Approaches to Encourage Early Greenhouse Gas Emission Reductions. 1999.
警告：这些引文格式不一定是100％准确.