Mannion, A. M. (1999). Natural environmental change: The last 3 million years. Routledge.
芝加哥风格引文Mannion, A. M. Natural Environmental Change: The Last 3 Million Years. London: Routledge, 1999.
MLA引文Mannion, A. M. Natural Environmental Change: The Last 3 Million Years. Routledge, 1999.
警告：这些引文格式不一定是100％准确.