郑永年. (2011). 保卫社会: Society must be defended. 浙江人民出版社.
Dyfyniad Arddull Chicago郑永年. 保卫社会: Society Must Be Defended. 浙江人民出版社, 2011.
Dyfyniad MLA郑永年. 保卫社会: Society Must Be Defended. 浙江人民出版社, 2011.
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