Cita APA

Butchart, S. H., Resit Akçakaya, H., Chanson, J., Baillie, J. E., Collen, B., Quader, S., . . . Hilton-Taylor, C. (2007). Improvements to the Red List Index. Public Library of Science.

Chicago Style Citation

Butchart, Stuart H.M., et al. Improvements to the Red List Index. Public Library of Science, 2007.

Cita MLA

Butchart, Stuart H.M., et al. Improvements to the Red List Index. Public Library of Science, 2007.