Παραπομπή APA

Walker, B., & Steffen, W. (1996). Global change and terrestrial ecosystems. CUP.

Παραπομπή Chicago Style

Walker, Brian, και Will Steffen. Global Change and Terrestrial Ecosystems. Cambridge: CUP, 1996.

Παραπομπή MLA

Walker, Brian, και Will Steffen. Global Change and Terrestrial Ecosystems. CUP, 1996.