diff --git a/01-Preface.md b/01-Preface.md
index fd00671..923667b 100644
--- a/01-Preface.md
+++ b/01-Preface.md
@@ -5,3 +5,4 @@ This document is meant to be a collaborative discussion of the best practices in
 In all cases brevity and succinctness is prefered. Examples are prefered for making the case for why one option is prefered over another. If necessary, words will be used.
 
 
+<a rel="license" href="http://creativecommons.org/licenses/by-nc/4.0/"><img alt="Creative Commons License" style="border-width:0" src="https://i.creativecommons.org/l/by-nc/4.0/88x31.png" /></a><br /><span xmlns:dct="http://purl.org/dc/terms/" href="http://purl.org/dc/dcmitype/Text" property="dct:title" rel="dct:type">C++ Best Practices</span> by <a xmlns:cc="http://creativecommons.org/ns#" href="http://cppbestpractices.com" property="cc:attributionName" rel="cc:attributionURL">Jason Turner</a> is licensed under a <a rel="license" href="http://creativecommons.org/licenses/by-nc/4.0/">Creative Commons Attribution-NonCommercial 4.0 International License</a>.