diff --git a/tutorials/python_data_entry_point.ipynb b/tutorials/python_data_entry_point.ipynb
index 4b3463e..a68c9a4 100644
--- a/tutorials/python_data_entry_point.ipynb
+++ b/tutorials/python_data_entry_point.ipynb
@@ -1,7 +1,7 @@
 {
  "metadata": {
   "name": "",
-  "signature": "sha256:cfb34d1c50e9095a633d85dd5229c48fbfb6c528e4e69f20b2d25a017f7cfdb7"
+  "signature": "sha256:6e3f719b1daa1babf21267ceb967f34d2d592ae35badaa05a16c0cfd6bc5acdb"
  },
  "nbformat": 3,
  "nbformat_minor": 0,
@@ -222,11 +222,15 @@
       "<br>\n",
       "\n",
       "<font size=\"1\">\n",
-      "**Reference:**\n",
+      "**Reference:**  \n",
       "Forina, M. et al, PARVUS - An Extendible Package for Data\n",
       "Exploration, Classification and Correlation. Institute of Pharmaceutical\n",
       "and Food Analysis and Technologies, Via Brigata Salerno, \n",
-      "16147 Genoa, Italy.</font>"
+      "16147 Genoa, Italy.\n",
+      "\n",
+      "Bache, K. & Lichman, M. (2013). UCI Machine Learning Repository [http://archive.ics.uci.edu/ml]. Irvine, CA: University of California, School of Information and Computer Science.\n",
+      "\n",
+      "</font>"
      ]
     },
     {