Sprague, M. (2012). Paradox: The Nine Greatest Enigmas in Science.
芝加哥风格引文Sprague, MR. Paradox: The Nine Greatest Enigmas in Science. 2012.
MLA引文Sprague, MR. Paradox: The Nine Greatest Enigmas in Science. 2012.
警告：这些引文格式不一定是100％准确.
APA引文