Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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