Cita APA

Steffen, W., & Walker, B. (1996). Global change and terrestrial ecosystems. Cambridge: Cambridge University.

Citación estilo Chicago

Steffen, Will, y Brian Walker. Global Change and Terrestrial Ecosystems. Cambridge: Cambridge University, 1996.

Cita MLA

Steffen, Will, y Brian Walker. Global Change and Terrestrial Ecosystems. Cambridge: Cambridge University, 1996.