Παραπομπή APA

Orr,David W. (1979). The global predicament. University of North Carolina Press.

Παραπομπή Chicago Style

Orr,David W. The Global Predicament. Chapel Hill: University of North Carolina Press, 1979.

Παραπομπή MLA

Orr,David W. The Global Predicament. University of North Carolina Press, 1979.