Rename References to Bibliography

[sharp kestrel]

Are you using thebibliography directly, bibtex or biblatex?

[full lava]

If using biblatex, use \printbibliography[title=Bibliography]

If it's uncentered and you want to center it, you can additionally add the following:

\defbibheading{bibliography}[\bibname]{
  \section*{\centering\normalsize\mdseries #1}
  \markboth{#1}{#1}
}