* {{cite book | last=Sung | first=Tzʻu | last2=McKnight | first2=Brian E. | title=The washing away of wrongs: forensic medicine in thirteenth-century China | publisher=Center for Chinese Studies, University of Michigan | publication-place=Ann Arbor | date=1981 | isbn=0-89264-800-7 | language=engchi}}
<ref name="x716">{{cite book | last=Sung | first=Tzʻu | last2=McKnight | first2=Brian E. | title=The washing away of wrongs: forensic medicine in thirteenth-century China | publisher=Center for Chinese Studies, University of Michigan | publication-place=Ann Arbor | date=1981 | isbn=0-89264-800-7 | language=engchi | page=}}</ref>