diff --git a/documentation/ref-manual/introduction.xml b/documentation/ref-manual/introduction.xml
index 1fe1372898..1376d96c8a 100644
--- a/documentation/ref-manual/introduction.xml
+++ b/documentation/ref-manual/introduction.xml
@@ -33,7 +33,7 @@
         without having to understand concepts, work through the
         <ulink url='&YOCTO_DOCS_QS_URL;'>Yocto Project Quick Start</ulink>.
         You can find "how-to" information in the
-        <ulink url='&YOCTO_DOCS_DEV_URL;'>Yocto Project Development Manual</ulink>.
+        <ulink url='&YOCTO_DOCS_DEV_URL;'>Yocto Project Development Tasks Manual</ulink>.
         <note><title>Tip</title>
             For more information about the Yocto Project Documentation set,
             see the
@@ -154,7 +154,8 @@
         <ulink url='https://www.yoctoproject.org/organization/enea-ab'>ENEA Linux</ulink>
         and <ulink url='https://www.yoctoproject.org/ecosystem/member-organizations'>others</ulink>.
         See the "<ulink url='&YOCTO_DOCS_DEV_URL;#creating-your-own-distribution'>Creating Your Own Distribution</ulink>"
-        section in the Yocto Project Development Manual for more information.
+        section in the Yocto Project Development Tasks Manual for more
+        information.
     </para>
 </section>
 
@@ -651,12 +652,12 @@
     <title>Development Checkouts</title>
     <para>
         Development using the Yocto Project requires a local
-        <ulink url='&YOCTO_DOCS_DEV_URL;#source-directory'>Source Directory</ulink>.
+        <ulink url='&YOCTO_DOCS_REF_URL;#source-directory'>Source Directory</ulink>.
         You can set up the Source Directory by cloning a copy of the upstream
-        <ulink url='&YOCTO_DOCS_DEV_URL;#poky'>poky</ulink> Git repository.
+        <ulink url='&YOCTO_DOCS_REF_URL;#poky'>poky</ulink> Git repository.
         For information on how to do this, see the
         "<ulink url='&YOCTO_DOCS_DEV_URL;#working-with-yocto-project-source-files'>Working With Yocto Project Source Files</ulink>"
-        section in the Yocto Project Development Manual.
+        section in the Yocto Project Development Tasks Manual.
     </para>
 </section>
 
@@ -687,7 +688,7 @@
                 information in the similarly-named recipe file.
                 For an example of an append file in use, see the
                 "<ulink url='&YOCTO_DOCS_DEV_URL;#using-bbappend-files'>Using .bbappend Files in Your Layer</ulink>"
-                section in the Yocto Project Development Manual.
+                section in the Yocto Project Development Tasks Manual.
                 <note>
                     Append files can also use wildcard patterns in their
                     version numbers so they can be applied to more than one