Dyfyniad APA

Mannion, A. (1999). Natural environmental changes: The last 3 million years. Routledge.

Dyfyniad Arddull Chicago

Mannion, A.M. Natural Environmental Changes: The Last 3 Million Years. London: Routledge, 1999.

Dyfyniad MLA

Mannion, A.M. Natural Environmental Changes: The Last 3 Million Years. Routledge, 1999.

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