A bibliography is a list containing the relevant information for all the sources that were cited in a document. Using the Bibliography tool, you not only automatically generate the list, but you can make sure that only the references cited in your document are included. The bibliography will automatically be updated when you add citations to your document, or when you add sources to or remove them from the Source Manager dialog box.
On the References tab, click the Manage Sources button to display the Source Manager dialog box.
Select any item marked as a placeholder.
Click Edit to display the Edit Source ...