APA

Birdsey R., Jenkins J., Johnston M. & Huber Sannwald E. (2007). The first state of the carbon cycle report (SOCCR). The North American carbon budget and implications for the global carbon cycle. Washington, DC: U.S. Climate Change Science Program, The Sobcommittee on Global Change Research.

Chicago

Birdsey Richard, Jenkins Jennifer, Johnston Mark and Huber Sannwald Elisabeth. 2007. The first state of the carbon cycle report (SOCCR). The North American carbon budget and implications for the global carbon cycle. Washington, DC: U.S. Climate Change Science Program, The Sobcommittee on Global Change Research.

Harvard

Birdsey R., Jenkins J., Johnston M. and Huber Sannwald E. (2007). The first state of the carbon cycle report (SOCCR). The North American carbon budget and implications for the global carbon cycle. Washington, DC: U.S. Climate Change Science Program, The Sobcommittee on Global Change Research.

MLA

Birdsey Richard, Jenkins Jennifer, Johnston Mark and Huber Sannwald Elisabeth. The first state of the carbon cycle report (SOCCR). The North American carbon budget and implications for the global carbon cycle. Washington, DC: U.S. Climate Change Science Program, The Sobcommittee on Global Change Research. 2007.