update readme

docs/README.md

@@ -83,6 +83,23 @@ PDF版本是全书初稿，人民邮电出版社的编辑老师们对初稿进
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+## 引用信息
+
+```
+王琦，杨毅远，江季，Easy RL：强化学习教程，人民邮电出版社，https://github.com/datawhalechina/easy-rl, 2022.
+```
+
+```
+@book{wang2022easyrl,
+title = {Easy RL：强化学习教程},
+publisher = {人民邮电出版社},
+year = {2022},
+author = {王琦，杨毅远，江季},
+address = {北京},
+isbn = {9787115584700},
+url = {https://github.com/datawhalechina/easy-rl}
+}
+```
 
 ## 致谢