Citazione APA

Clayton, A. M. H., & Radcliffe, N. J. (1996). Sustainability: A systems approach. Earthscan.

Stile di citazione Chicago

Clayton, Anthony M. H., e Nicholas J. Radcliffe. Sustainability: A Systems Approach. Boulder, Colo.: Earthscan, 1996.

Citazione MLA

Clayton, Anthony M. H., e Nicholas J. Radcliffe. Sustainability: A Systems Approach. Earthscan, 1996.