Cita APA (7th ed.)

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.