The SELIBR template is used to create links to one or more directory entries for books, magazines, book series, or articles within the National Library of Sweden's catalog, LIBRIS. This can be used for books that do not have ISBNs, but that have a SELIBR directory entry in LIBRIS, for example, after |id=
in the {{citation}} template. The only required parameter is the catalog entry number. Up to nine parameters are supported. The code can be obtained by the Libris WebSearch.