Foot, The. Cambridge University Press.
芝加哥风格引文Foot, The. Cambridge University Press.
MLA引文Foot, The. Cambridge University Press.
警告：这些引文格式不一定是100％准确.
APA引文
Foot, The. Cambridge University Press.
芝加哥风格引文Foot, The. Cambridge University Press.
MLA引文Foot, The. Cambridge University Press.