Williamson, T. (2009). Brief History of Time.
芝加哥风格引文Williamson, T. Brief History of Time. 2009.
MLA引文Williamson, T. Brief History of Time. 2009.
警告：这些引文格式不一定是100％准确.
APA引文
Williamson, T. (2009). Brief History of Time.
芝加哥风格引文Williamson, T. Brief History of Time. 2009.
MLA引文Williamson, T. Brief History of Time. 2009.