diff --git a/book/_config.yml b/book/_config.yml
index b54b01d..e3c2dfc 100644
--- a/book/_config.yml
+++ b/book/_config.yml
@@ -56,6 +56,9 @@ sphinx:
     apastyle: _ext/
     bracket_citation_style: _ext/
 
+teachbooks:
+  attribution_location: margin
+  attribution_color: attributiongrey
 
 bibtex_bibfiles: 
   - references.bib