Update README.md

Author: Easy-Shu

README.md

@@ -31,9 +31,11 @@ python作为免费的开源软件，数据分析与可视化的包更新迭代
 如果这本书对你的科研图表绘制有用，也可引用该书：
 
 ```
-@book{zhang2020Python,
-  title={Beautiful Data Visualization with {Python}-How to Make Professional Charts},
-  author={Jie Zhang},
+@book{Zhang2020python,
+  title={Beautiful Data Visualization of {Python}- How to Make Professional Charts},
+  author={Zhang, Jie},
+  isbn={9787121383700},
+  url={https://books.google.com.hk/books?id=v3C2zQEACAAJ},
   year={2020},
   publisher={Publishing House of Electronic Industry}
 }