diff --git a/pages/common/numfmt.md b/pages/common/numfmt.md
index 50b3826ce..dab5002d3 100644
--- a/pages/common/numfmt.md
+++ b/pages/common/numfmt.md
@@ -1,6 +1,7 @@
 # numfmt
 
 > Convert numbers to and from human-readable strings.
+> More information: <https://www.gnu.org/software/coreutils/manual/html_node/numfmt-invocation.html>.
 
 - Convert 1.5K (SI Units) to 1500: