Cita APA

Held, I. M., Delworth, T. L., Lu, J., Findell, K. L., & Knutson, T. R. (2005). Simulation of Sahel drought in the 20th and 21st centuries. National Academy of Sciences.

Chicago Style Citation

Held, I. M., T. L. Delworth, J. Lu, K. L. Findell, i T. R. Knutson. Simulation of Sahel Drought in the 20th and 21st Centuries. National Academy of Sciences, 2005.

Cita MLA

Held, I. M., et al. Simulation of Sahel Drought in the 20th and 21st Centuries. National Academy of Sciences, 2005.