Παραπομπή APA

Elian , G. (1979). Principle of sovereignty over natural resources. Sijthoff and Noordhoff.

Παραπομπή Chicago Style

Elian , George. Principle of Sovereignty over Natural Resources. USA: Sijthoff and Noordhoff, 1979.

Παραπομπή MLA

Elian , George. Principle of Sovereignty over Natural Resources. Sijthoff and Noordhoff, 1979.