Elsevier provides several desirable features. The site displays the publication date in the list of results upon requesting that results be sorted by date. Both search and browse capabilities are available at Elsevier's web site. From the browse form, users can select one or more subject areas and limit by publication type such as reference works or dictionaries. All entries include subject terms, which are not hot-linked, and a description.
Some entries also provide reviews, contents, and intended audiences.
The strength of the Facts on File web site is its various sub-sections, which can be browsed. Facts on File provides a link to their science reference materials where librarians can browse subject areas. Librarians can also browse just new titles, which includes reference materials. Browsing is also available by type of reference material, such as encyclopedias. Searching is also available.