Παραπομπή APA

Ernst, W. G. (2000). Earth systems: Processes and issues. Cambridge University Press.

Παραπομπή Chicago Style

Ernst, W. G. Earth Systems: Processes and Issues. Cambridge: Cambridge University Press, 2000.

Παραπομπή MLA

Ernst, W. G. Earth Systems: Processes and Issues. Cambridge University Press, 2000.