Zheng (država) – razlika između verzija

<ref name="BaiShouyi">{{cite book |last=Bai |first=Shouyi |authorlink= |coauthors= |title=An Outline History of China |url=https://archive.org/details/outlinehistoryof00unse_0 |year=2002 |publisher=Foreign Language Press |location=Beijing |isbn=7-119-02347-0}}</ref><ref name="HGCreel">{{cite book |last=Creel |first=Herrlee G. |authorlink=Herrlee Creel |coauthors= |title=The Origins of Statecraft in China |year= |publisher= |location= |isbn=0-226-12043-0}}</ref><ref name="RLWalker">{{cite book |last=Walker |first=Richard Lewis |authorlink= |coauthors= |title=The Multi-state System of Ancient China |yeardate=1953-01-01 |url=https://archive.org/details/multistatesystem0000rich |publisher= |location=Beijing |isbn=}}</ref><ref name="chinaKnowledge">{{cite web |url =http://chinaknowledge.de/History/Zhou/rulers-zheng.html |title = The Zheng Feudal Lords |accessdate = August 28 |accessdaymonth = |accessmonthday = |accessyear = 2007 |author = |last = |first = |authorlink = |coauthors = |date = |year = |month = |format = |work = |publisher = China Knowledge |pages = |language = English |doi = |archiveurl = |archivedate = |quote = }}</ref>