diff --git a/knowledge base/acl.md b/knowledge base/acl.md
index 75eaca7..9b2c809 100644
--- a/knowledge base/acl.md	
+++ b/knowledge base/acl.md	
@@ -23,7 +23,7 @@ setfacl -x u:dummy:rw test
 setfacl -b test/declarations.h
 ```
 
-## Sources
+## Further readings
 
 - [Access Control Lists (ACL) in Linux]
 
diff --git a/knowledge base/cheat.sh.md b/knowledge base/cheat.sh.md
index e2d4df8..87bcf6d 100644
--- a/knowledge base/cheat.sh.md	
+++ b/knowledge base/cheat.sh.md	
@@ -21,7 +21,7 @@ curl cht.sh/python/lambda
 curl cht.sh/go/:list
 ```
 
-## Sources
+## Further readings
 
 - [website]
 
diff --git a/knowledge base/chezmoi.md b/knowledge base/chezmoi.md
index 6b32e2c..a1b4b23 100644
--- a/knowledge base/chezmoi.md	
+++ b/knowledge base/chezmoi.md	
@@ -105,15 +105,12 @@ $
 {{- end }}
 ```
 
-## Sources
-
-- [cheat.sh]
-
 ## Further readings
 
 - Chezmoi [user guide]
 - [Go text/template]
 - [Sprig]
+- [cheat.sh]
 
 [user guide]: https://www.chezmoi.io/user-guide/setup/
 
diff --git a/knowledge base/jdupes.md b/knowledge base/jdupes.md
index 2c3e1af..b196057 100644
--- a/knowledge base/jdupes.md	
+++ b/knowledge base/jdupes.md	
@@ -63,7 +63,7 @@ Supported filters:
 - `newer:datetime`: only include files newer than the specified date; use the date/time format _YYYY-MM-DD HH:MM:SS_; time is optional
 - `older:datetime`: only include files older than the specified date; use the date/time format _YYYY-MM-DD HH:MM:SS_; time is optional
 
-## Sources
+## Further readings
 
 - Jdupes' [github] page
 
diff --git a/knowledge base/pi-hole.md b/knowledge base/pi-hole.md
index ec0c41f..6cc1e63 100644
--- a/knowledge base/pi-hole.md	
+++ b/knowledge base/pi-hole.md	
@@ -7,7 +7,7 @@
 curl -sSL https://install.pi-hole.net | bash
 ```
 
-## Sources
+## Further readings
 
 - Pi-hole's [repository]
 
diff --git a/knowledge base/zypper.md b/knowledge base/zypper.md
index bdbd30d..b26d8c4 100644
--- a/knowledge base/zypper.md	
+++ b/knowledge base/zypper.md	
@@ -26,11 +26,8 @@ sudo rpm --query --list ${PACKAGE_NAME}
 ## Further readings
 
 - [rpm]
+- [How can I list all files which have been installed by an ZYpp/Zypper package?]
 
 [rpm]: rpm.md
 
-## Sources
-
-- [How can I list all files which have been installed by an ZYpp/Zypper package?]
-
 [how can i list all files which have been installed by an zypp/zypper package?]: https://unix.stackexchange.com/questions/162092/how-can-i-list-all-files-which-have-been-installed-by-an-zypp-zypper-package#239944