diff --git a/doc/modules/gaussian_process.rst b/doc/modules/gaussian_process.rst
index 7fae49349f342..94cca8999e489 100644
--- a/doc/modules/gaussian_process.rst
+++ b/doc/modules/gaussian_process.rst
@@ -601,12 +601,7 @@ shown in the following figure:
 References
 ----------
 
-    * `[RW2006]
-      <http://www.gaussianprocess.org/gpml/chapters/>`_
-      **Gaussian Processes for Machine Learning**,
-      Carl Eduard Rasmussen and Christopher K.I. Williams, MIT Press 2006.
-      Link to an official complete PDF version of the book
-      `here <http://www.gaussianprocess.org/gpml/chapters/RW.pdf>`_ .
+.. [RW2006] Carl Eduard Rasmussen and Christopher K.I. Williams, "Gaussian Processes for Machine Learning", MIT Press 2006, Link to an official complete PDF version of the book `here <http://www.gaussianprocess.org/gpml/chapters/RW.pdf>`_ .
 
 .. currentmodule:: sklearn.gaussian_process