diff --git a/README.md b/README.md
index 5c5f9fc..41010e0 100755
--- a/README.md
+++ b/README.md
@@ -88,7 +88,7 @@ enddef
 print foo("Hello", "world");
 ~~~~~~~~~~
 
-Read the [MY-BASIC Quick Reference](MY-BASIC%20Quick%20Reference.pdf) (especially the "**Programming with BASIC**" section) to get more details about how to program in MY-BASIC.
+Read the [MY-BASIC Quick Reference](https://paladin-t.github.io/my_basic/MY-BASIC%20Quick%20Reference.pdf) (especially the "**Programming with BASIC**" section) to get more details about how to program in MY-BASIC.
 
 ## Related projects
 
@@ -127,7 +127,7 @@ MY-BASIC is cleanly written in a single C source file and an associated header f
 
 You can definitely [link with MY-BASIC as a lib](https://github.com/paladin-t/my_basic/wiki/Link-with-MY_BASIC) as well.
 
-For more details about using MY-BASIC when it has be integrated with a project, please see [MY-BASIC Quick Reference](MY-BASIC%20Quick%20Reference.pdf) or read the [Wiki](#wiki) pages.
+For more details about using MY-BASIC when it has be integrated with a project, please see [MY-BASIC Quick Reference](https://paladin-t.github.io/my_basic/MY-BASIC%20Quick%20Reference.pdf) or read the [Wiki](#wiki) pages.
 
 ## [Interpreter workflow diagram](https://github.com/paladin-t/my_basic/wiki/Interpreter-workflow-diagram)
 
@@ -139,7 +139,7 @@ More detail are issued in the [Wiki](#wiki) pages.
 
 ## [Wiki](https://github.com/paladin-t/my_basic/wiki)
 
-The [MY-BASIC Quick Reference](MY-BASIC%20Quick%20Reference.pdf) includes most of the fundamental topics, however, it hasn't covered everything, such as the design principle, machinism behind MY-BASIC, effective practice, etc; all of them are issued in the [Wiki](https://github.com/paladin-t/my_basic/wiki):
+The [MY-BASIC Quick Reference](https://paladin-t.github.io/my_basic/MY-BASIC%20Quick%20Reference.pdf) includes most of the fundamental topics, however, it hasn't covered everything, such as the design principle, machinism behind MY-BASIC, effective practice, etc; all of them are issued in the [Wiki](https://github.com/paladin-t/my_basic/wiki):
 
 * Principles
  * [Language design](https://github.com/paladin-t/my_basic/wiki/Language-design)