Παραπομπή APA

de Sadeleer, N. (2002). Environmental principles: From political slogans to legal rules. Oxford.

Παραπομπή Chicago Style

de Sadeleer, Nicolas. Environmental Principles: From Political Slogans to Legal Rules. New York: Oxford, 2002.

Παραπομπή MLA

de Sadeleer, Nicolas. Environmental Principles: From Political Slogans to Legal Rules. Oxford, 2002.