Ripple, W. J., Wolf, C., Newsome, T. M., Hoffmann, M., Wirsing, A. J., & McCauley, D. J. (2017). Extinction risk is most acute for the world’s largest and smallest vertebrates. Proc Natl Acad Sci U S A.

Ripple, William J., Christopher Wolf, Thomas M. Newsome, Michael Hoffmann, Aaron J. Wirsing, and Douglas J. McCauley. "Extinction Risk Is Most Acute for the World’s Largest and Smallest Vertebrates." Proc Natl Acad Sci U S A 2017.

Ripple, William J., et al. "Extinction Risk Is Most Acute for the World’s Largest and Smallest Vertebrates." Proc Natl Acad Sci U S A 2017.