diff --git a/Magneto_Active_Polymers_Book/README.md b/Magneto_Active_Polymers_Book/README.md
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--- a/Magneto_Active_Polymers_Book/README.md
+++ b/Magneto_Active_Polymers_Book/README.md
@@ -4,4 +4,4 @@ This folder is a placeholder for codes related to the book
 * J-P. Pelteret and P. Steinmann (2019), 
 Magneto-active polymers: Fabrication, characterisation, modelling and simulation
 at the micro- and macro-scale, 
-de Gruyter Mouton. ISBN: [xxxxxx](https://www.degruyter.com/view/product/455548);
+de Gruyter Mouton. ISBN: 9783110418576; DOI: [10.1515/9783110418576](https://www.degruyterbrill.com/document/doi/10.1515/9783110418576).