{cross-referencing} is about making connections from a point in a document to related information elsewhere, usually within the same document. Standard commands are \label and \ref. For questions about citing or bibliographies, use {bibliographies} instead.
cross-referencing is about making connections from a point in a document to related information elsewhere, usually within the same document.
LaTeX's standard commands for generating cross-references are \label and \ref.
There are many packages enhancing LaTeX's cross-referencing capabilities, for instance cleveref, prettyref, nameref, titleref, varioref, xr and hyperref. The last two are outstanding: xr allows cross-referencing to other LaTeX documents and hyperref can produce hyperlinks in PDF documents. Since the latter is a very complex package for which we've got many question, please use the tag hyperref instead, if your question specifically concerns this package.
If your question is about these or related commands or packages, use cross-referencing. For questions about citing or bibliographies, use bibliographies instead.
See also: Cross-reference in the Wikipedia.
