rename bib file

book.tex

@@ -65,8 +65,7 @@ showstringspaces=false
 %\usepackage{showframe}
 \def\ShowFrameLinethickness{0.125pt}
 
-\addbibresource{book-MIT.bib}
-\addbibresource{bibsamp.bib}
+\addbibresource{book.bib}
 
 \begin{document}