diff --git a/TP3/Exercice1.R b/TP3/Exercice1.R
index b28fb55..edba141 100644
--- a/TP3/Exercice1.R
+++ b/TP3/Exercice1.R
@@ -1,3 +1,6 @@
+# https://github.com/BreizhHardware/TD-R/tree/main/TP3
+
+
 # Spécifier un miroir CRAN
 options(repos = c(CRAN = "https://cran.rstudio.com/"))
 
diff --git a/TP3/Exercice2.R b/TP3/Exercice2.R
index 8df5e72..ef27950 100644
--- a/TP3/Exercice2.R
+++ b/TP3/Exercice2.R
@@ -1,3 +1,6 @@
+# https://github.com/BreizhHardware/TD-R/tree/main/TP3
+
+
 # Spécifier un miroir CRAN
 options(repos = c(CRAN = "https://cran.rstudio.com/"))
 
diff --git a/TP3/Exercice3.R b/TP3/Exercice3.R
index 6d261a7..bf9c056 100644
--- a/TP3/Exercice3.R
+++ b/TP3/Exercice3.R
@@ -1,3 +1,5 @@
+# https://github.com/BreizhHardware/TD-R/tree/main/TP3
+
 # Spécifier un miroir CRAN
 options(repos = c(CRAN = "https://cran.rstudio.com/"))
 
diff --git a/TP3/Exercice4.R b/TP3/Exercice4.R
index 17b5811..f3e6af4 100644
--- a/TP3/Exercice4.R
+++ b/TP3/Exercice4.R
@@ -1,3 +1,5 @@
+# https://github.com/BreizhHardware/TD-R/tree/main/TP3
+
 # Spécifier un miroir CRAN
 options(repos = c(CRAN = "https://cran.rstudio.com/"))
 
diff --git a/TP3/Exercice5.R b/TP3/Exercice5.R
index e6e714a..f3270bc 100644
--- a/TP3/Exercice5.R
+++ b/TP3/Exercice5.R
@@ -1,3 +1,5 @@
+# https://github.com/BreizhHardware/TD-R/tree/main/TP3
+
 # Spécifier un miroir CRAN
 options(repos = c(CRAN = "https://cran.rstudio.com/"))