APA

Barnosky A. D., Bell C. J., Emslie S. D., Goodwin H. T., Mead J. I., Repenning C. A., Scott E. & Shabel A. B. (20040823). Exceptional record of mid-Pleistocene vertebrates helps differentiate climatic from anthropogenic ecosystem perturbations. : Proceedings of the National Academy of Sciences of the United States of America.

Chicago

Barnosky Anthony D, Bell Christopher J, Emslie Steven D, Goodwin H Thomas, Mead Jim I, Repenning Charles A, Scott Eric and Shabel Alan B. 20040823. Exceptional record of mid-Pleistocene vertebrates helps differentiate climatic from anthropogenic ecosystem perturbations. : Proceedings of the National Academy of Sciences of the United States of America.

Harvard

Barnosky A. D., Bell C. J., Emslie S. D., Goodwin H. T., Mead J. I., Repenning C. A., Scott E. and Shabel A. B. (20040823). Exceptional record of mid-Pleistocene vertebrates helps differentiate climatic from anthropogenic ecosystem perturbations. : Proceedings of the National Academy of Sciences of the United States of America.

MLA

Barnosky Anthony D, Bell Christopher J, Emslie Steven D, Goodwin H Thomas, Mead Jim I, Repenning Charles A, Scott Eric and Shabel Alan B. Exceptional record of mid-Pleistocene vertebrates helps differentiate climatic from anthropogenic ecosystem perturbations. : Proceedings of the National Academy of Sciences of the United States of America. 20040823.