Look for ways to export citations for your works cited page within databases and catalogs. Often, these options will appear under a tools menu. Below are examples of where to find citation export functions in a few popular sources.
BELCAT (library catalog):
Zotero (pronounced "zoh-TAIR-oh") is an application that collects, manages, and cites research sources. It's easy to use, connects with your web browser to download sources, and best of all it's free.
Zotero allows you to attach PDFs, notes and images to your citations, organize them into collections for different projects, and create bibliographies.
It automatically updates itself periodically to work with new online sources and new bibliographic styles.