Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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