Helmholz, R. H. (2001). The ius commune in England: Four studies. Oxford University Press.
芝加哥风格引文Helmholz, R. H. The Ius Commune in England: Four Studies. Oxford ; New York: Oxford University Press, 2001.
MLA引文Helmholz, R. H. The Ius Commune in England: Four Studies. Oxford University Press, 2001.
警告：这些引文格式不一定是100％准确.