diff --git a/pages.hbs/common/sha1sum.md b/pages.hbs/common/sha1sum.md
index 5e3aa31204..a49710c4cd 100644
--- a/pages.hbs/common/sha1sum.md
+++ b/pages.hbs/common/sha1sum.md
@@ -1,6 +1,7 @@
 # sha1sum
 
 > Izračunava SHA1 kriptografske kontrolne brojeve.
+> Više informacija: <https://www.gnu.org/software/coreutils/manual/html_node/sha1sum-invocation.html>.
 
 - Izračunaj SHA1 kontrolni broj za datoteku:
 
diff --git a/pages/common/sha1sum.md b/pages/common/sha1sum.md
index 0459447001..b5a5be4540 100644
--- a/pages/common/sha1sum.md
+++ b/pages/common/sha1sum.md
@@ -1,6 +1,7 @@
 # sha1sum
 
 > Calculate SHA1 cryptographic checksums.
+> More information: <https://www.gnu.org/software/coreutils/manual/html_node/sha1sum-invocation.html>.
 
 - Calculate the SHA1 checksum for a file: