diff --git a/main.tex b/main.tex
index d588308..c774638 100644
--- a/main.tex
+++ b/main.tex
@@ -69,7 +69,7 @@
 %                                                    %
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
-\bibliography{references-books,references-websites,references-wikipedia}
+\bibliography{references-books,references-websites,references-wikipedia,references-files}
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %                                                    %