diff --git a/docs/03_Implement_a_service.md b/docs/03_Implement_a_service.md
index 0ad5d91..e1264ae 100644
--- a/docs/03_Implement_a_service.md
+++ b/docs/03_Implement_a_service.md
@@ -6,6 +6,10 @@ This Page will describe how you can implement and add your own. Please make sure
 and the [Concept of LinkHandler](https://teamnewpipe.github.io/documentation/02_Concept_of_LinkHandler/)
 before implementing your own Service.
 
+- [ServiceList](https://teamnewpipe.github.io/NewPipeExtractor/javadoc/org/schabi/newpipe/extractor/ServiceList.html)
+- [StreamingService](https://teamnewpipe.github.io/NewPipeExtractor/javadoc/org/schabi/newpipe/extractor/StreamingService.html)
+- [ServiceInfo](https://teamnewpipe.github.io/NewPipeExtractor/javadoc/org/schabi/newpipe/extractor/StreamingService.ServiceInfo.html)
+
 
 ### Search
 - [SearchExtractor](https://teamnewpipe.github.io/NewPipeExtractor/javadoc/org/schabi/newpipe/extractor/search/SearchExtractor.html)