Gaya APA

Busch, D, E., Trexler, J, C. (2002). Monitoring ecosystem : interdiscoplonary approaches for evaluating ecoregional initiatives . Washington: Island Press.

Gaya MLA

Busch, David, E., Trexler, Joel, C. "Monitoring ecosystem : interdiscoplonary approaches for evaluating ecoregional initiatives". Washington: Island Press, 2002. Text.