Since you are already explicitly give the title of your bibliography, you can just sneak in a \label
there.
With David Purton's MWE and the obvious changes
\documentclass{article}
\usepackage{biblatex}
\addbibresource{biblatex-examples.bib}
\usepackage[colorlinks]{hyperref}
\begin{document}
\section{Here}
\subsection{There}
Page \pageref{bib}. Section \ref{bib}.
\nocite{sigfridsson,worman}
\printbibliography[title={Quellenverzeichnis\label{bib}}, heading=subbibnumbered]
\end{document}

If you'd like a solution that automatically selects 'References' or 'Bibliography' depending on the class, you can try
\documentclass{article}
\usepackage{biblatex}
\addbibresource{biblatex-examples.bib}
\usepackage[colorlinks]{hyperref}
\makeatletter
\newcommand*{\reforbibname}{%
\ifodd\abx@classtype\relax
\bibname
\else
\refname
\fi
}
\makeatother
\begin{document}
\section{Here}
\subsection{There}
Page \pageref{bib}. Section \ref{bib}.
\nocite{sigfridsson,worman}
\printbibliography[title={\reforbibname\label{bib}}, heading=subbibnumbered]
\end{document}
The internal command \abx@classtype
is used by biblatex
to detect certain classes. Conveniently, the 'even classes' are article
-like and use \refname
, the 'odd classes' are report
/book
-like and use \bibname
.
Note that this does not take into account possible changes of the default title in bibliography heading definitions.
An alternative would be to include the \label
directly in the bibliography heading definition. In this case that would be
\documentclass{article}
\usepackage{biblatex}
\addbibresource{biblatex-examples.bib}
\usepackage[colorlinks]{hyperref}
\defbibheading{subbibnumbered:link}[\refname]{%
\subsection{#1}%
\label{bib}}
\begin{document}
\section{Here}
\subsection{There}
Page \pageref{bib}. Section \ref{bib}.
\nocite{sigfridsson,worman}
\printbibliography[heading=subbibnumbered:link]
\end{document}
(of course you could overwrite the bibheading subbibnumbered
if you like, but since the label is hard-coded in the heading, it may be better to choose a unique name to avoid using it twice.) In any case, this requires you to know/copy the original definition of the bibliography heading used in your document.
hyperref
, why not make use of it?\cite
-type commands) for which electronic copies are made available on some device? The mere fact that your paper contains a Quellenverzeichnis needn't be demonstrated by providing a suitable hyperlink, does it?