diff --git a/README.md b/README.md
index 891435f..6c45694 100644
--- a/README.md
+++ b/README.md
@@ -54,4 +54,9 @@ sleep(2)
 # 重置
 Servo.resetDegree()
 sleep(1)
-```
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+```
+
+## 3. 引用
+本模块部分内容参考和引用了以下文章或者视频：
+[【csdn】物联网开发笔记（54）- 使用Micropython开发ESP32开发板之控制MG90S舵机](https://blog.csdn.net/zhusongziye/article/details/128085911)
+[【bilibili】33. 舵机-基于MicroPython的ESP32仿真](https://www.bilibili.com/video/BV1D84y1y7hC/?share_source=copy_web&vd_source=d5c937d9897e79931f44e07bc5cf875c)
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