Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

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