Reader's Digest Association & Chad, R. W. (2007). When nature turns nasty. Reader's Digest Association.
芝加哥风格引文Reader's Digest Association 与 Rachel Warren Chad. When Nature Turns Nasty. London: Reader's Digest Association, 2007.
MLA引文Reader's Digest Association 与 Rachel Warren Chad. When Nature Turns Nasty. Reader's Digest Association, 2007.
警告：这些引文格式不一定是100％准确.