Cita APA (7a ed.)

Rees, W. E., & Wackernagel, M. (2013). The shoe fits, but the footprint is larger than earth. Public Library of Science (PLoS).

Cita Chicago Style (17a ed.)

Rees, William E., y Mathis Wackernagel. The Shoe Fits, but the Footprint Is Larger than Earth. Public Library of Science (PLoS), 2013.

Cita MLA (8a ed.)

Rees, William E., y Mathis Wackernagel. The Shoe Fits, but the Footprint Is Larger than Earth. Public Library of Science (PLoS), 2013.