APA (7 ম সংস্করণ) উদ্ধৃতি

Rolfe, C., Michaelowa, A., & Dutschke, M. (1999). Closing the Gap: A Comparison of Approaches to Encourage Early Greenhouse Gas Emission Reductions.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Rolfe, Chris, Axel Michaelowa, এবং Michael Dutschke. Closing the Gap: A Comparison of Approaches to Encourage Early Greenhouse Gas Emission Reductions. Hamburg, 1999.

M.L.A (8 ম সংস্করণ) উদ্ধৃতি

Rolfe, Chris, et al. Closing the Gap: A Comparison of Approaches to Encourage Early Greenhouse Gas Emission Reductions. 1999.