\documentclass{langscibook}
\author{Jane Doe} 
\title{New findings in linguistics}
\subtitle{What everyone should know}
% \renewcommand{\lsSeries}{silp}
% \renewcommand{\lsSeriesNumber}{99}
% \BackTitle{} 
% \BackBody{}
% \dedication{}
% \typesetter{}
% \proofreader{}
% \renewcommand{\lsISBNdigital}{000-0-000000-00-0}
% \renewcommand{\lsISBNhardcover}{000-0-000000-00-0}
% \renewcommand{\lsISBNsoftcover}{000-0-000000-00-0}
% \renewcommand{\lsISBNsoftcoverus}{000-0-000000-00-0}
% \BookDOI{}
% \renewcommand{\lsURL}{http://langsci-press.org/catalog/book/000} 

\bibliography{localbibliography}
\begin{document}
\maketitle

\frontmatter
\currentpdfbookmark{Contents}{name} % adds a PDF bookmark
\tableofcontents
% \include{chapters/preface}
% \include{chapters/acknowledgments}
% \include{chapters/abbreviations} 

\mainmatter       
\chapter{Introduction}





\backmatter
\phantomsection%this allows hyperlink in ToC to work
\printbibliography[heading=references] 
\cleardoublepage
\phantomsection 
\addcontentsline{toc}{chapter}{Index} 
\addcontentsline{toc}{section}{Name index}
\ohead{Name index} 
\printindex 
\cleardoublepage
\phantomsection 
\addcontentsline{toc}{section}{Language index}
\ohead{Language index} 
\printindex[lan] 
\cleardoublepage  
\phantomsection 
\addcontentsline{toc}{section}{Subject index}
\ohead{Subject index} 
\printindex[sbj]
\ohead{} 
\end{document}