Clark, N., Allen, P. M., & Perez-Trejo, F. (1995). Evolutionary dynamics and sustainable development: A systems approach. Edward Elgar.
Lua i Stíl Chicago (17ú heag.)Clark, Norman, Peter M. Allen, agus Francisco Perez-Trejo. Evolutionary Dynamics and Sustainable Development: A Systems Approach. Aldershot, Hants, England: Edward Elgar, 1995.
Lua MLA (9ú heag.)Clark, Norman, et al. Evolutionary Dynamics and Sustainable Development: A Systems Approach. Edward Elgar, 1995.
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